... variable-focus 可变焦点 variable-focus pyrometer 变焦点高温计 variable-frequency electric drive 变频电气传动 ...
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fixed focus pyrometer 固定焦距高温计
variable-focus pyrometer [仪] 变焦点高温计
fixed-focus total-radiation pyrometer 定焦点全辐射高温计
adjustable focus type radiation pyrometer 可调焦距式辐射高温计
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