dip needle [地物] 磁倾针 ; 磁倾记 ; 磁针

dip-needle 磁针

dip needle work 磁法勘探

dip of the needle 磁针俯角磁倾角 ; 磁针俯角 ; 磁倾角

miner's dip needle [矿业] 矿用磁倾仪

dip of needle 磁针倾角

magnetic dip needle 磁倾仪

dip-needle mechanism 磁倾针机构

dip p needle 磁倾针