1. 低温：low temperature welding 低温焊接 | low temperature 低温 | low temperature 低温低温

2. 低温低温：low temperature 低温 | low temperature 低温低温 | low tempering 低温回火

3. 深度制冷：低温反应:Low temperature reaction | 深度制冷:Low temperature | 低温韧性:low temperature toughness

4. 低温反应：深度制冷:Low temperature | 低温反应:low temperature | 低温韧性:low temperature toughness

noun

1. the absence of heat

    e.g. the coldness made our breath visible
           come in out of the cold
           cold is a vasoconstrictor

    Synonym: coldnesscoldfrigidityfrigidness