QQ快速登錄
一步迅速開始
1.密封型 1)由漸開線和擺線組合而成 2) 其ηv略遜于擺線嚙合的螺桿泵 3) &nbs ...
|關(guān)于我們|網(wǎng)站地圖|油氣儲運網(wǎng) ( 魯ICP備11007657號-3 )
GMT+8, 2024-11-8 02:59 , Processed in 0.030741 second(s), 17 queries , Gzip On, MemCached On.
Powered by Discuz! X3.5
Copyright © 2001-2023, Tencent Cloud.