one. Centrifuge classification: There are three international classification methods for centrifuges: by purpose, by speed, and by structure. Classified by use : divided into preparative centrifuges and preparative analytical centrifuges. Preparative centrifuge: A centrifuge that only separates ......
[Scientific name] Mucuna sempervirens [Alias] Evergreen Li, Niu Ma Teng, Guo Shanlong Genus Production in China's Shaanxi, Sichuan, Guizhou, Yunnan and other provinces, Japan also has distribution. Mostly attached to large trees, vines sometimes cross the valley. Evergreen or semi-evergreen ......
In the period of rapid expansion of sweet potatoes, fertilizers such as superphosphate and magnesium sulfate can be used to repel insects from the ground and improve the insect resistance of sweet potatoes. When the soil is wet after the rain, use superphosphate 25 to 30 times in the morning or e ......
The normal temperature of the small tractor engine is generally 80 ~ 90 °C, the cooling water temperature is maintained between 60 ~ 100 °C, when the cooling system in time to take away the heat absorbed or generated by the parts to ensure the normal operation of the engine. If the water tem ......
Scientific name: Araucariacunninghamia Alias: Kahn Araucaria, Araucaria Family is: Araucaria araucaria Morphological characteristics: Araucaria has a long, slender, graceful tree and is a famous ornamental tree in the world. It is one of the modern relics. Araucaria is 40-60 meters high and h ......
The oil sunflower crop has a short growth period, wide adaptability, strong stress resistance, high yield, high oil yield and excellent oil quality. Vigorously developing the cultivation of oil sunflowers not only alleviates the tension in oil consumption, but also makes full use of land resources ......
Scientific name: AcerginnalaMaxim Family: Eucalyptus Alias: tea bar Origin distribution: The origins of Central and North Asia, China's northeast, the Yellow River Basin and the lower reaches of the Yangtze River are also distributed. Morphological characteristics: Deciduous small trees, ......
Fujian Yellow Rabbit is an excellent meat rabbit breed in China. It has beautiful coat color, yellow body hair, white belly, large ears, and full hindquarters. Fast giant rabbits, fast growth in the early stage, daily weight gain of more than 30 grams, adult weight of 2 kg to 3 kg, weight than oth ......
Look at duck shed to duck to facilitate the transfer of duck venues, available bamboo can take a shed to put down a simple bed, shed cover poncho. The young ducks were purchased about 40 days before the brooding late rice harvest. The soft ground straw was placed on the floor of the room and the b ......
Scientific name: Malushalliana Family is: Rosaceae Scientific name: Malushalliana English name: HallCrabapple Origin: Native to China's southwest, south, east and other places, especially in Sichuan. Morphological characteristics: Small trees. Canopy development, young branches purple. ......