固定电话线或基于路由的前置作业时间。
本文件服务为指导，甲骨文公司制造的前置作业时间。
This document serves as a guide to Oracle Manufacturing Lead times.
尺骨3013是整体表现最佳的发射器所提供的前置作业是在农村或半农村地区，最小的高功率的特点。
The ULNA 3013 is the overall best performer provided the preamp is operating in rural or semi-rural areas that feature minimal high power transmitters.
在油气井注水泥作业中，常常需要在水泥浆与泥浆之间注入一段具有特殊技术性能流体，这段流体就称为前置液。
During the primary cementing process, usually we pump some fluid with special technical performance between mud and cement slurries. It is called ahead fluid.
在油气井注水泥作业中，常常需要在水泥浆与泥浆之间注入一段具有特殊技术性能流体，这段流体就称为前置液。
During the primary cementing process, usually we pump some fluid with special technical performance between mud and cement slurries. It is called ahead fluid.
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