Hand wheel,lever and spanner driving and safety valve,pressure reducing valve,traps overleap this symbol.
1、手轮、手柄和扳手传动以及安全阀、减压阀、疏水阀省本代号。
Hand wheel,lever and spanner driving and safety valve,pressure reducing valve,traps overleap this symbol.
1、手轮、手柄和扳手传动以及安全阀、减压阀、疏水阀省本代号。
The sea obediently respects its boundary, and though it be but a belt of sand, it does not overleap the limit.
但是约伯的问题得到一个令人十分羞愧的答案。人不是大海。
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