这些探头各有一个在加压情况下由小蓄电池供电的小型电热器。
These probes include a small electrical heater which is supplied from a small battery in the pressure case.
该仪器还具有液晶汉字化显示、蓄电池供电和便于现场使用等特点。
Besides, the instrument features liquid crystal display of Chinese characters, battery power supply and easy field use.
当市电供电正常时本实用新型可边照明边充电，停电时即由蓄电池供电。
When the power supply is normal, the utility model can make lighting and charging at the same time; and in power failure, the battery will offer the power.
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