As we all know, liquid nitrogen tanks are used to store liquid nitrogen and preserve biological samples. They can maximize the low-temperature characteristics of liquid nitrogen. It is used in different industries such as medical research and industrial cold assembly.Small gas ...
In biological laboratories, the commonly used low-temperature storage equipment is liquid nitrogen tank, which can be divided into two categories according to the storage mode, one is liquid-phase liquid nitrogen tank, and the other is gas-phase liquid nitrogen tank; however, ...
Satellite Image Video The SP, GF03C and MF satellites of JL1 constellection can gaze at a single target point for 120 seconds at most to record the instantaneous changes of ground objects. Features of Live Satellite Video of Earth 1 Track the target. 2 Record the track and ...