The helmet is made of a small, helium gas cylinder with special motion sensors.

头盔由带特殊的运动传感器的小氦气筒组成。

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Purchased key Labor Protection Articles, such as safety Helmet, Anti-gas Aspirators must have label of safety assessment.

所采购的关键劳动防护用品如安全帽、防毒口罩等必须有安鉴字样的标签。

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The helmet crew is a professional team for treating the disaster accidents such as the mine fire, mine gas, mine dust, mine water, and roof, etc.

矿山救护队是处理矿井火、瓦斯、煤尘、水、顶扳等灾害事故的专业队伍。

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They also found high-capacity magazines, tear gas, a military-style helmet and 10 silencers.

CNN: Renegade ex-cop Dorner died from single gunshot to head

Outside, the first officer to encounter Holmes -- who was still dressed in body armor, a helmet and a gas mask as he stood near his car -- described him as unnaturally relaxed.

CNN: STORY HIGHLIGHTS

Like the Segway, electric bicycles still leave riders vulnerable to the gas-powered masses of steel and glass that fly by on high-speed roads, and require wearing a helmet--a deal breaker for many style-conscious commuters.

FORBES: Magazine Article