Micro-computer monitors work inside the electron gun to emit electronic, through the acceleration of high-voltage electrode, adjust shooting at the screen, the screen of fluorescent material by high-speed electronic flow impact, resulting in X-ray, scientific evidence shows that more than 20 of each year only Guoqin dose of radiation, will constitute a harm to humans, operate microcomputer year will not be more than 0.3 Roentgen of exposure; even when engaged in computer work for 30 years, the cumulative exposure will not be sufficient to cause human injury lowest half, but during early pregnancy (the first 3 months) the fetus is in a cell division, organ differentiation sensitive period, or should be:(1) hours of work per week is not more than 20 hours (2) one meter away from the computer (3) wearing protective skirt (4) work completed Huanyi bath in order to reduce the electromagnetic radiation on the impact of the fetus.

微電腦顯示器工作時(shí)男人爽到高潮喊叫视频，內(nèi)部的電子槍發(fā)射出電子來国产午夜三级片免费观看，經(jīng)過高壓電極的加速，調(diào)整射向熒光屏黄色视频永久免费观看，屏幕上的熒光物質(zhì)受到高速電子流的撞擊亚洲国产aⅴ精品一区不卡，產(chǎn)生X射線，科學(xué)論證表明人人人人人人人人人干干干干干干干干干我，每年只有超過20論琴的劑量照射性爱A片，才構(gòu)成對(duì)人體的傷害、操作微機(jī)一年也不會(huì)超過0.3倫琴的照射量射射射老司机插插插；即使從事微機(jī)工作30年禁16无码黄片，累積的照射量也不足以造成人體損傷最低值的一半，不過妊娠早期(頭3個(gè)月)胎兒正處于細(xì)胞分裂国产综合色在线视频区天天综合色，器官分化的敏感時(shí)期拍拍欧美性爱，還是應(yīng)當(dāng)：(1)每周工作不超過20小時(shí)(2)距電腦一米開外(3)穿防護(hù)裙(4)工作完畢洗澡換衣，以減少電磁輻射對(duì)胎兒的影響操逼视频免费91。

roentgen radiation：倫琴射線,X射線

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