Install relief valve cover nut and tighten.
安装安全阀阀盖螺母，并加以紧固。
Remove the relief valve cover, stem/diaphragm assembly, and relief valve spring.
拆卸安全阀阀盖，阀杆/隔膜总成，和安全阀弹簧。
A biodegradable cover can offer some relief for nature, according to the scientists.
一个可生物分解的外壳可以给环境减轻压力，据科学家所说。
A strain relief member, may be disposed between the cover top and bottom portions.
应力消除元件可以布置在外盖顶部与底部之间。
A strain relief member, may be disposed between the cover top and bottom portions.
应力消除元件可以布置在外盖顶部与底部之间。
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