... guard shield; protecting screen; protection screen; protective screen; protective shield; radiation shutter 臭氧防护屏 protective ozone shield ..
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shutter radiation 辐射闸门
radiation source shutter 射线源快门
automatic shutter aganist leakage radiation 防漏射线自动遮光器
automatic shutter against leakage radiation 防漏射线自动遮光器
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