steel pipe v-column v形钢柱
V vent pipe 放散管道
v-type pipe condenser U型管冷凝器
V-shaped accordion pipe V型波纹管
V-type pipe 人字接管
pipe line steel mn v 石油管线钢39mn2v
Pipe wrap probe with V 有撕拉带的管道探头
Do not walk under any pipe resting on the V-door ramp.
不允许在放有钻杆的大门坡道下边通行。
By surrounding a gas-tight, pattented V-Seal with two compressed knitted wire mesh air gap spacers, the connection is made by simply sliding one section of pipe over another.
气密的V形密封器，两个压缩的编织金属网布气隙间隔器，略过管的一部分滑向另一部分。
Do not slide down pipe, rotary hose, V-door ramp, or cables. Do not ride with the cat-line or air hoist.
不答应从钻杆、水龙带、大门坡道、电缆、锚头绳或气动绞车绳索上往下滑。
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