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.
情绪的不安会产生强大而致命的有害物质。
Emotional upsets generate powerful and deadly toxic substances.
的确，锡已经取代了在焊接时会产生大量有害物质的铅的王者之位。 由于锡毒性较弱，它已在许多焊接过程中取代了铅。
Tin has replaced lead, which is more toxic, in a lot of soldering.
真菌感染能产生一些有害物质—毒枝毒素。
A substance having a specific toxic effect on certain cells.
真菌感染能产生一些有害物质—毒枝毒素。
A substance having a specific toxic effect on certain cells.
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