英译汉一句 thanks1.5 Since the rate of combustion is closely dependent upon the concentration of oxygen present,an enriched oxygen atmosphere (greater than 21% vol) becomes a hazard.

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英译汉一句 thanks1.5 Since the rate of combustion is closely dependent upon the concentration of oxygen present,an enriched oxygen atmosphere (greater than 21% vol) becomes a hazard.
英译汉一句 thanks
1.5 Since the rate of combustion is closely dependent upon the concentration of oxygen present,an enriched oxygen atmosphere (greater than 21% vol) becomes a hazard.

因为燃点跟氧气的浓度关系特别大，所以如果氧气的浓度超过21%/升的话，就会很危险

1.5自率燃烧密切依赖氧气浓度目前，富氧气氛（大于21 ％卷）变成一种危险。

既然燃烧的可能性取决于氧气的浓度，那么一个氧气的环境（当它的量大于21%）就变得相对危险了。

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