根据“地震及前兆数字观测技术规范”电磁部分的要求，在地磁台站建筑施工过程中，需用质子旋进磁力仪在现场对建筑物及周围磁场背景进行监测。
According to the require of the technique criterion, in the building process of geomagnetic station, it have to use rotation magnetometer to monitor the background of structure and site.
该产品采用单式励磁技术，磁道较浅，吸吊薄板时磁场穿透现场相对较弱，可减少多张粘连的现场。
This product adopts the technology of single excitation, the magnet track is shallow, so the penetrating power of magnet is weak, it can avoid the conglutination of more sheets.
但这两种测试方法并不能模拟现场实际工况。测试人员在使用这两种方法时，往往忽略工作现场电磁场环境对互感器误差的影响。
But these two methods can't simulate practical situation of locale, when using the two methods, the test personnel often neglect the effect of electromagnetic condition for ct error in work site.
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