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。
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.
C57BL小鼠10只，注射B16单细胞悬液于小鼠腹腔（腹腔组）和左后肢（后肢组），构建小鼠黑色素瘤生物力学模型；
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.
C57BL小鼠10只，注射B16单细胞悬液于小鼠腹腔（腹腔组）和左后肢（后肢组），构建小鼠黑色素瘤生物力学模型；
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