Risks of venture capital firms mainly stem from a large number of indefiniteness (or called randomness) in the course of operating capital.

风险投资公司的风险，主要源于其资本运营过程中存在的大量不确定性(或称随机性)。

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Check the operating condition of electric draw stem and electricity parts. Check the electric hydraulic parts and pipe joints.

定期检查电动推杆及电气部分的运行情况，电液部分的运行情况及管接头处是否有泄漏现象。

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Operating Principle: The tied-diaphragm valve is a handwheel-operated valve, utilizing a two-piece stem connected through the diaphragms.

这是通过穿透横膈膜，把上下阀杆机械地连接在一起来实现的。

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His company even developed a device that is mounted to the operating table to help surgeons inject the stem cells.

CNN: FDA approves human embryonic stem cell study