protecting tube meaning in English

保管
热电偶保护管

Mild white three sections led fence protect tube
奶白色三段护栏管
Three sections led fence protect tube
透明色三段护栏管
Protect tubes for fiber optic fiber
光纤保护用管
Led fence protect tube series
Led数码管系列
Measurement and control ; electrical temperature sensors ; thermometers not fitted with protecting tubes
测量和控制.电温度传感器.无附加保护管的温度计

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