这个系统包括两个送风机（其中一个备用）、空气管和氧化空气分布管。
The system consists of two air blowers (one of them as a common spare), air piping and grid distribution pipe.
配件：遥控器一个、电源线一条、用户手册一本、镜头纸一本、产品合格证一张、信号线一条、备用保险管一只。
Accessories: a remote control, a power cord, a user manual, a lens paper, a product certification, a signal line, a back-up insurance control.
请保留在MIV上游管的设备用于水道的排污。
本文介绍在该公司引进的加氢裂化装置反应区内，连接设备用的奥氏体不锈钢有缝管的情况。
Austenitic stainless steel seam tubes used to connect the equipments within the reaction zone of a hydrocracking plant imported by the Incorporation are introduced in the paper.
从手柄套筒上拧下螺帽就能从L形管腔内取送备用锯条。
The spare saw blades can be taken out of the L-shaped lumen by screwing the nuts down from a handle sleeve barrel.
分析了天然气价格变化趋势及管输天然气备用气源的选择。
The variation trends of natural gas price and selection of stand-by gas sources for piped natural gas are analyzed.
分析了天然气价格变化趋势及管输天然气备用气源的选择。
The variation trends of natural gas price and selection of stand-by gas sources for piped natural gas are analyzed.
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