The ball valve before the valve can be closed after the valve seat, the so-called two-way sealing characteristics, the use of built-in discharge valve, the valve body cavity may be out emissions.
该球阀阀前、阀后阀座都能密封，即所谓双向密封特性，利用自带的排放阀，阀体中腔可向外排放。
2
The biomechanical animal model was built by injecting the B16F10 melanoma cell suspension into the abdominal cavity and left skeletal muscles in 10 C57BL mice.