We have carried out magneticcleaning for 619 specimens from 59 sites by A. F and thermal demagnetization.
用热退磁和交变场退磁方法对59个采点的619块样品做了磁清洗处理。
2
The original orientation of the core in the formation can be obtained by magneticcleaning test, magnetic parameter measurement and data processing.
岩样经一定步骤的磁清洗、相应的磁性参数测量和数据处理，可恢复岩样在地下的原始方位。
3
The double-faced hollow toughened glass provides good sound insulation, heat insulation and safety. Installing power-operated or magnetic control shutter will save you the trouble of curtain cleaning.