24# 佃工 7 u {6 Q' w& y, D6 e5 g
这个神奇的故事始于昨天,高潮的迭起在今天,何时谢幕,没人知道,也许明天,也许后天,也许就没有也许,,,,,,,,,,,,,,,,' A: q, n/ H* m
* p' p$ C% X {. p8 n/ S
: ~+ M, ]8 Q0 E/ k% c( J
闲话少说,接着评论,上次说到pull cable 的易和难,今天, ..." }9 Y N: I. m, C( x% Y
贾电工 发表于 2010-2-23 19:27
4 y% B8 |) E' l) C2 ~you are right, right now in Oil sand must place we use Filedbus- [# l# y" x, s0 Y l% l$ M+ A
and some place you can find out HART, DeviceNet and so on.' Y) \( @# @1 r5 |7 n8 `
depend on company