介绍一种新型全脸式防护面具面罩的结构特点及其罩体、阻水罩模具的设计。
This paper presents a new type of semi-conductive water-blocking tape used for the insulation shield in power cables.
这种面具将口鼻完全遮盖，称为半面罩过滤呼吸器。
The mask covers the nose and mouth. These are called half-mask air-purifying respirators.
如果你曾看到消防员穿戴全面罩防毒面具时，背上还有一个空气瓶，那么你就见过SCBA系统了。
If you have ever seen a firefighter wearing a full-face mask with an air tank on his or her back, then you have seen an SCBA system.
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