研究经济有效的多点套损井长井段密封加固修复技术就成为目前修井领域亟待解决的课题。
Developing an economic and valid pressurized and enhanced casing repair Technology for multiply casing damages with long damaged segment becomes the earnest issue in well repair area.
经比选采用三滑道，六滑轨，高空逐段拼装，多点顶推累积滑移施工技术。
Construction technologies of three sliding way, six sliding track, aerial assembly in segments and multipoint jacking and sliding were adopted after alternatives comparison.
如果路由器不知道任何全部多点传送参与者在这个段，它将不会发送任何一个包。
If the router is not aware of any multicast participants on its segment, it will not forward any of the packets.
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