... spring loaded control valve；弹簧加载控制阀 spring loaded cover；弹簧加载盖 spring loaded directional control valve；弹簧加载定向控制阀 ...
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spring loaded cover
弹簧盖
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Beneath it is the spring-loaded keypad cover and mouthpiece, which snaps down into position when you receive a call.
ENGADGET: Nokia 7110 review Mobile
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