n. containment
misc. protective casing
... protective cap 保护帽，护罩 protective casing 保护外壳 protective choke 抗流线圈，扼流线圈，防干扰线圈 ...
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通风口的保护外壳设计，专用于许多公用水供应系统中的空气释放阀。
VENT GUARD? Is a protective enclosure designed exclusively for the air release valve found in many public water supply systems.
为提高保护外壳的膨胀性能，提出了圆形波纹管形式外壳的设想，并采用非线性有限元方法分析了其膨胀性能。
To enhance expandable ability of expandable screen shell, a circular bellow shell is designed and its expandable ability is analyzed by non-linear FEA method.
分段在运送过程中注意保护外壳的涂层，尽量避免机械损伤；若有较多的机械碰伤，必须在分段完工前修补结束后方可报验。
Block in the transport process protection coatings to avoid mechanical damage. If suffer much, the all mechanical damage should be repaired before final inspection.
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