Visual examination detected blood spatter contamination in 50.5% (303/600) of the face shields, whereas leucomalachite green staining detected blood contamination in 66.0% (396/600).
肉眼可见的污染见于50.5%（303/600）面罩，而隐色孔雀绿染色可在66.0%（396/600）的面罩中检测到。
Face shields should have crown and chin protection and wrap around the face to the point of the ear.
防护面屏的设计应该有对头顶部和下巴的保护，面屏侧面应延伸至耳朵的部位。
Face shields should have crown and chin protection and wrap around the face to the point of the ear.
防护面屏的设计应该有对头顶部和下巴的保护，面屏侧面应延伸至耳朵的部位。
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