fibre seat cover
... fibre scrubber 玻璃刷帚 fibre seat cover 纤维座套 fibre selector 光纤选择器 ...
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塑料管道系统。玻璃纤维增强式热固性塑料元件。检验带有弹性密封件的刚性锁定管座套筒接头设计的试验方法。
Plastics piping systems. glass - reinforced thermosetting plastics components. test methods to prove the design of rigid locked socket - and - spigot joints with elastomeric seals.
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