·2,447,543篇论文数据，部分数据来源于NoteExpress
核磁共振磁力仪第一次进入航空勘测是在五十年代中期。
The nuclear-magnetic-resonance magnetometer first went into service in airborne prospecting during the middle 1950s .
youdao
应用推荐
模块上移
模块下移
不移动