Before Qin era is the end of the spring and autumn and Warring States period background and pilot studies of the rise. Lay the foundation for the "contention of a hundred schools of thought" situation from arising.
前诸子时代是春秋末战国时期子学兴起的背景与先导,为百家争鸣局面的产生奠定了基础。
abstract: objective to observe effects of lintong mineral spring resting therapy on pilot blood chemistry and blood composition.
目的观察临潼矿泉对疗养飞行员血液生化指标及血液有形成分的影响。
a pilot-operated vent valve for pressure relief uses tank pressure, not weights or a spring, to keep the vent valve seat closed.
先导式通气阀泄压时利用储罐压力,而不是重力或弹簧外力,来保持通气阀阀座关闭。
spring-loaded quilled type indirect pilot
弹簧式间接导正销
Safety valve on the structure forms can be divided into spring-loaded, lever-type weights, the pilot-style .
安全阀按结构形式可分为弹簧 式 、 杠杆重锤式 、 先导 式.
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