A gear was a type of mechanical component. It had a tooth shape and could continuously mesh to transmit motion and power. Gears could be divided into different types according to the tooth shape, the shape of the gear, the shape of the tooth line, the surface of the gear teeth, and the manufacturing method. Common types of gears include cylindrical gears, conical gears, oblique gears, racks, and worms and wormwheels. Gears had a wide range of applications and could be used in a variety of mechanical equipment, such as mechanical watches, electric fans, and blenders. The design specifications and material selection of gears were determined according to the specific application requirements. The parameters of the gear included module, pressure angle, tooth height, tooth thickness, gear diameter, center distance, tooth backlash, etc. The development of gears was very mature. Modern gear technology could achieve very small modules and large diameter, and the transmission power and speed had a wide range. In short, gears were an important mechanical component. They had the advantages of efficient transmission, strong carrying capacity, and stable operation.
Youmai was a common green leafy vegetable with many effects and effects. It contained lactucin, which helped with sleep. It could be squeezed into juice and drunk before bed. The lettuce contained mannitol and other active ingredients, which had the effect of diuretics and promoting blood circulation. It also contained diet fiber and vitamins C, which had the effect of eliminating excess fat, so it was called weight-loss lettuce. The vegetable was also rich in vitamins and minerals, and its nutritional value was higher than that of lettuce and lettuce. The cooking method of the lettuce could be cold or stir-fried. However, you need to pay attention when eating lettuce. People with deficiency of the spleen and stomach and frequent frequency should not eat it.
The oil lamp is one of the images that often appears in literary texts. It is usually used to describe a short-lived but precious thing. It exists for a short time but its value is very high. In novels, oil lamps were often used to express a spiritual value, for example, it could help the protagonist maintain his faith in times of difficulty, or it was a symbol that represented the protagonist's love and cherish of life.
The purpose of reading literary texts was usually to inspire readers 'understanding and thinking of life by describing various life experiences and emotional experiences. As a temporary but precious existence, the oil lamp could make readers feel the fragility and preciousness of life, so they would cherish life more and pay more attention to the people around them. At the same time, the oil lamp can also help the readers feel the protagonist's spirit of maintaining faith and courage in difficult times, thus encouraging them to be more firm in their beliefs when facing the challenges of life.
In short, the oil lamp is one of the common images in literary texts. It can help to express the fragility and preciousness of life, inspire readers to understand and think about life, and also serve as a symbol and expression technique in novels.
Chinese marine literature is an important part of Chinese literature. It was born in the early 20th century and developed from the 1950s to the 1980s. It was a period of development for Chinese literature.
Chinese marine literature mainly described marine life and expressed their love and exploration of the ocean. Among them were the representatives, Lao She, Shen Congwen, Hai Zi, etc.
Lu Xun's "Madman's Diary","The True Story of Ah Q" and other novels depicted the dark side of Chinese society and the suffering of the people. At the same time, they also expressed their longing and love for the ocean.
Lao She's novels such as Ocean and Camel Xiangzi described the struggles and struggles of the Chinese people in the development of the ocean, expressing the people's love and desire for the ocean.
Shen Congwen's novels, such as Border Town and Long River, depicted the beautiful scenery of Jiangnan and the deep charm of marine culture. At the same time, they also expressed his love and exploration of the ocean.
Hai Zi's poems such as Facing the Sea and Spring Flowers Blooming expressed his love and yearning for the ocean, which became a classic work of Chinese marine literature.
Chinese marine literature not only depicted the marine life and culture, but also reflected the thoughts and emotions of the Chinese people. It has high literary and artistic value.
Han Ding Fishing Tackle was a Chinese fishing industry brand established in 2012. The company was known for providing cost-effective and excellent after-sales service. Their products covered nearly 50 fishing categories and formed three product systems for different levels of anglers. Among them, the Handing No. 1 series of fishing rods was their groundbreaking product. By the end of 2020, they had sold 12 million pieces. Handing Fishing Tackle had its own industrial park in Weihai, Shandong Province, with facilities such as R & D and production centers, brand operation centers, and logistics and storage centers. In addition, Han Ding Fishing Tackle also had a brand marketing center in Hangzhou. Their products were widely recognized and praised in the market.
The steps to apply the caster oil to the hair were as follows: First, apply the caster oil to the hair roots and scalp with your fingertips and massage them. Then, she covered her hair with a plastic shower cap and wrapped a hot towel around her hair. After waiting for 15-20 minutes, remove the towel and plastic shower cap. Finally, let the oil stand for a while before rinsing it clean. Castor oil can promote hair growth, increase blood flow to the scalp, moisten dry scalp, reduce dandruff, and make hair thick, tough and shiny. If you want to apply caster oil directly to your hair, it's best to mix it with a lighter oil, such as sweet almond oil, grape seed oil, or olive oil. This would reduce the density of the oil and make it easier to remove.
There were many ways to refine oil, and the main method included retorting. Distillation used the principle of vaporizing and condensing to separate the oil into various components with different boiling points. Distillation was usually divided into two methods: atmospheric and vacuum. In addition, there were other refining methods, but the specific details were not in the information provided.
The main methods of oil extraction were natural drainage method, artificial extraction method, and partial pressure method. The natural outfall method was the original mining method. By exploring the oil layer, waiting for the oil to naturally emerge from the ground, and then using a straw to collect it into a container. Artificial extraction uses drilling equipment and tools to penetrate the oil layer and extract the oil to the surface. This method required drilling, inserting casing, setting up drilling tools, and using high-pressure steam pump to extract oil. The partial pressure method was another mining method, but the details were not mentioned. In short, according to the information provided, the methods of oil extraction included natural drainage and artificial extraction.
The principle of oil extraction was to extract oil from underground oil reserves through a series of geological exploration, drilling, and production processes. The specific principles of oil extraction included geological exploration, drilling, completion, sealing, and artificial lifting. By analyzing the formation structure, rock properties, and the characteristics of oil-bearing formations, geological exploration determined the location and nature of the oil reservoir. The drilling was the key process of passing the steel pipe through the ground and into the oil reservoir. Completion and sealing were steps to ensure the stability of the well wall and prevent oil leakage. When the pressure of the oil layer was not enough to allow the oil to rise to the ground by itself, artificial lifting techniques such as sucker rod pump and electric pump were needed to extract the oil from the bottom of the well. In short, the principle of oil extraction was to extract oil from underground oil reserves through exploration, drilling, and production processes.
The refining process of oil mainly used the method of retortion. Distillation was to use the difference in boiling points of different components in the oil to vaporize it by heating and then cool it to liquify it, thereby separating different products such as gasoline, kerosene, and diesel. Atmospheric and vacuum distillations were commonly used. Atmospheric Distillation was carried out under near-atmospheric conditions, mainly to distill products such as gasoline, kerosene, and diesel. Vacuum Distillation was carried out under lower pressure to distill heavy distillations, which were used as consumables or cracking materials. In addition, cracking was another commonly used refining method. By changing the molecular structure of heavy oil, the proportion of light components was increased. Cracking usually includes different types such as thermal cracking, visbreaking, fluid cracking, and hydraulic cracking. In general, the refining process of oil was a complex and delicate process. Through different processing methods and techniques, various oil products could be obtained.