The performance of regulating valves in the automatic control system not only directly effect the automation level, but also has a bearing on the safe and economic operation of generating units.
在自动控制系统中调节阀的性能不仅直接影响自动化水平，而且也关系到机组的安全和经济运行。
Objective: To observe the dynamic regulating effects of GFG on the immune system of the mice with S180 tumor bearing and discuss its mechanism.
目的：观察灵芝发酵液多糖提取物对S180荷瘤小鼠部分免疫指标的动态调节作用，探讨其抗肿瘤机制。
A core regulating pad ring is padded on the lower ring of the thrust bearing, which can make the hook swing in any directions corresponding to the connecting cylinder.
在推力轴承下圈垫上调心垫圈，可使吊钩相对连接筒在任意方向上摆动。
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