Valve Disadvantages: the valve is prone to leakage around the stem, especially in-board leakage when a vacuum is pulled on the valve outlet.
阀门的缺点：当阀门排气口处是真空时，阀门在阀杆附近容易泄漏，特别是内部泄漏。
Those words are echoed in the National Science Board report - Preparing the Next Generation of STEM Innovators: Identifying and Developing Our Nation's Human Capital.
国家科技委员会的报告-《储备下一代STEM开拓者：发现和培养人才》中完整引述了这段话。
Objectives Discusses the acute front board heart stem to have the arrythmia with under wall heart stem the formation rate and to the prognosis the influence.
目的探讨急性前壁心梗与下壁心梗发生心律失常的发生率及对预后的影响。
Objectives Discusses the acute front board heart stem to have the arrythmia with under wall heart stem the formation rate and to the prognosis the influence.
目的探讨急性前壁心梗与下壁心梗发生心律失常的发生率及对预后的影响。
应用推荐