mary,are you supposed to take part in the game » 玛丽，你应该参加游戏 Main machinery » 主要机械 such as rail.
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main machinery control 主机控制机构 ; 主机操纵机械
main machinery console 主机操纵台
main machinery control room 主机控制室
main machinery power plant 主动力装置
main machinery manufacturing plant 主要制造设备
The generaldesign of ship is a complicated system project,whichinvolves the determination of main dimensions, the selection of main machinery, the design of lines, the -general arrangement, the calculation of performances and economical analysis.
船舶总体设计是一个复杂的系统工程，它涉及到主尺度确定、主机选型、型线设计、总布置设计、性能校核、经济性分析等许多方面。
参考来源 - 环渤海湾车客滚装船船型方案论证研究·2,447,543篇论文数据，部分数据来源于NoteExpress
In agricultural production, pump irrigation and drainage are the main machinery.
在农业生产中，泵是主要的排灌机械。
The main principles, equipments, main machinery and electric equipments of high-pressure descaling system are introduced.
文中介绍了高压水除鳞系统的主要原理、设备应用的范围、组成系统的主要机械和电气设备。
Road compaction machinery is one of main machinery in road construction, the paper main discusses the situation and technical development of the machinery.
道路压实机械是筑路工程中主要机械之一，本文主要阐述此类机械的现状及技术发展趋势。
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