Add your avatar

[shunjie]

Previously I think the avatar settings got problem. Now I enabled it. Upload your avatar !

[flashmech]

Yup back then I thought was a bug or something. Had trouble even customising my signature.

All's well now!

[shunjie]

Yea it the server permission problem. Will be good if any phpBB guru want to volunteer to help manage this forum =D

[stuv539]

一般化工流程中需要用高压螺杆空压机来进一步压缩初压力数倍于大气压的气体，进而使气体压力更加增高，这种压缩机叫做增压压缩机。循环机也是增压压缩机一种，也称循环泵，它的作用是将进气压力在50～1000表压的气体再提高，10～50表压，用以克服系统中的阻力弥补循环系统内气体压气降。循环的特点是：它在较高压力下工作，然而压缩比却是很小的，而且压缩后的气体温度不高，所以一般循环机无冷却水套。