I love you not because of who you are , but because of who i am when i am with you 我?勰悴皇且验槟闶且? ?怎样的人，而是因为我喜欢与你在一起的感觉。
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Abstract : the applications of commonly used butterfly valve , gate valve , restriction - orifice and wear resistant flow adjusting valve in dedusting system were concretely analyzed , and the mechanism of wear resistant flow adjusting valve was described in detail 文摘:对工程中常用的蝶阀、闸扳阀、节流孔扳和耐磨型流量调节阀在除尘系统中的运用作了具体的分析，并着重对耐磨型流量调节闶的机理进行了比较详细的论述
