Wind, area size, and number of smokers affect the degree of exposure; and.
风向,区域大小和吸烟者的人数影响到了暴露程度。
Super thin invisible film, good vacuum effect, high identical degree of exposure;
超薄磨沙不反光膜,真空效果卓越,曝光传真度高;
The degree of risk depends on the severity of the hazard and the degree of exposure.
风险的程度取决于危害的严重性和暴露程度。
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