这台缝纫机是靠电动机启动的。
简单控制是指对电动机进行启动、制动和顺序控制。
Simple control is about start, apply the brake, and order control.
本偶合器传动效率高，可实现电动机软启动，过载保护。
Its advantages are high drive efficiency, soft start of electric motor, and overload protection.
压紧辊启动由电动机直接驱动，并且具有跟踪再启动功能。
Pressing roll driven by motor directly, it with tracking and then start.
压紧辊启动由电动机直接驱动，并且具有跟踪再启动功能。
Pressing roll driven by motor directly, it with tracking and then start.
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