防毒面罩作为个人防护器材，用于对人员的呼吸器官，眼睛及面部皮肤提供有效防护。面罩是防毒面具的重要组成部分，是使人员面部与外界染毒空气隔离的部件。防毒面具由面罩，导气管和滤毒罐组成，面罩可直接与滤毒罐连接使用，或者用导气管与滤毒罐连接使用。防毒面罩可以根据防护要求分别选用各种型号的滤毒罐，应用在化工、仓库、科研、各种有毒、有害的作业环境。
他们或通过防毒面罩，或携带沉重的氧气瓶进行呼吸。
They breathe through uncomfortable respirators or carry heavy oxygen tanks on their backs.
本实用新型提供了一种用于从事有害物质作业人员的防毒面罩。
The utility model provides a gas mask for operating personnel who works with harmful substance.
他说当警方接近并且试图进入车内的时候，他们缺少梯子，闪光弹，防毒面罩。
He said the police lacked ladders, flash bombs, and gas masks when they approached and tried to pry open the bus. "What was going through your mind? You had time to study the bus," he said.
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