pneumatic rubber lined butterfly valve
...我现在体育也不是很好 » I now sport is not very good 气动衬胶蝶阀 » Pneumatic rubber lined butterfly valve 期望问题能够尽快得到解决 » Expect the problem to be resolved as soon as possible ..
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pneumatic rubber lined butterfly valve
气动橡胶衬里蝶阀
以上为机器翻译结果，长、整句建议使用 人工翻译 。