近年来，氮化镓基led在发光效率上有很大的进展，不过在静电防护上却还有很大的改善空间。
In recent years, there is a large improvement on the luminous efficiency of LEDs. However, there are some problems in LED ESD protection.
防护措施必须使感染效率下降85 %以上，才能使医院内传播的基本繁殖率降至临界值以下。
It is necessary to drop the infection efficiency by over 85% through protection measures for reducing the basic reproduction rate below the critical level.
结果经铅玻璃防护屏和铅防护服进行双重防护后，其屏蔽效率达到95%，可显著减少X射线的辐射量；
Results The shielding efficacy was 95% by the lead glass and plumbic suit double protection, the X ray radiation was reduced markedly.
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