主令控制器由外壳和防爆元件等组合而成。
Master controller is constructed of shell and explosion-proof components.
新系列的精简型同步控制器，装有标准的DIN外壳，前面有安装面板。
New series of compact synchronous controllers, built into a standard DIN housing and designed for front panel mounting.
一个交流的权力中心由一个可控硅功率控制器或控制器的外壳，包装一或无电压匹配变压器。
An ac power center consists of a SCR power controller or controllers, packaged in an enclosure with or without voltage matching transformers.
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