玖玖资源站中文字幕一区二区_妓女的分类_好爽?要高潮了?深视频_乳奴隷乳フ辱julia在线观看日本精品VA在线观看_亚洲色大18成人网站在线观看

電壓矢量測(cè)量選件測(cè)試儀T Rex

GROUND THE INSTRUMENT: To minimize shock hazard, the instruments Ground Terminal must be connected to a properly grounded receptacle. In many cases, the quality of the safety ground provided by the power cord does not fulfil safety needs. Also the power cord supplied with the equipment must be connected an electrical receptacle with an electrical ground (safety earth ground). Non grounded instruments are dangerous and may cause instrument damage.

KEEP AWAY FROM LIVE CIRCUITS: Operating personnel must not remove instrument covers. Component replacement and internal adjustments must be made by qualified service personnel. Do not replace components with power cable connected. To avoid injuries, always disconnect power, discharge circuits, and remove external voltage sources before touching components. 電壓矢量測(cè)量選件測(cè)試儀T Rex