That makes traditional lighting expensive and environmentally hazardous.
这就使传统的照明方式昂贵而且对环境有害。
Environmentally hazardous media do not escape in the event that bellows are damaged.
对环境有害的媒介无法逃生如果波纹管已损坏。
The heat transfer fluid shall be environmentally safe and shall not require hazardous material disposal.
热传导流体必须是符合环保要求的，不会产生有害物质。
The heat transfer fluid shall be environmentally safe and shall not require hazardous material disposal.
热传导流体必须是符合环保要求的，不会产生有害物质。
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