The device is manually operated, using a simple handle.
这个装置利用一个简单的手柄，可以用手操作。
This shutter device for fading a picture can be operated by hand.
这个使画面惭入的遮板装置可以用手操作。
This device can also be operated under vacuum condition.
本装置也可在真空情况下操作。
Avoid shake and physical shock when being operated and moved during turning on the device.
打开机器操作移动时避免震动和机械冲击。
The trial device is made, the stress test and operated test to bellows is calibrated.
制造了实验装置，对波纹管装配应力进行了标定和机构运转试验。
The trial device is made, the stress test and operated test to bellows is calibrated.
制造了实验装置，对波纹管装配应力进行了标定和机构运转试验。
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