Hand wheel,lever and spanner driving and safety valve,pressure reducing valve,traps overleap this symbol.
1、手轮、手柄和扳手传动

全阀、减压阀、疏
阀省略本代号。
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I meant to mention this earlier.Of course within bounds, nevertheless a congenial friend or friends represents a basic need for psychic interchange, and even a safety valve for builtup pressures.The psychic interchange is the important aspect.
我本想早点提到这一点。当然是
限度之
,不过,一位或多位契合
朋友代表了灵性交流
基本需要,甚至是压力积聚时
一个安全阀。灵性
交流是一个重要
面向。


One sometimes wonders if the Olympics serve as a safety valve in international human relations, attributing to a collective sanity in a world that, not unlike that of ancient times, is perpetually the scene of conflict, strife, and human misery.
有人也许会想,
这个与古代没有什么两样,永远是冲突、斗争、悲剧
世界上,奥运会是否可以成为国际关系
安全阀,来唤醒人们共同
良知。
优点