“anchor washpipe spear”的概念、定义、翻译、参考文献-科学参考

单词	anchor washpipe spear
释义	anchor washpipe spear [`aŋ·kǝr `wäsh´pīp ´spir] ^{PETROLEUM ENGINEERING} A special type of fishing tool; attached to the washover pipe with slips and released from the pipe upon engagement of the fish by the tool, it allows the washover and retrieval of the fish to be accomplished in one return trip.
随便看	directional microphone directional pattern directional phase shifter directional property directional relay directional response pattern directional separation filter directional solidification directional stability directional structure directional well direction angles direction cosine direction finder direction-finder-bearing indicator direction finder deviation direction-finding net direction-giving beacon direction-independent radar direction indicator direction numbers direction of propagation direction of relative movement direction ratios direction rectifier

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