The retention of data in a storage device.
数据保存在存储设备中的现象。
The utility model relates to an electricity-saving device of an electromagnet, which carries out retention by alternating current.
本实用新型涉及一种以交流吸持的电磁铁之节电装置。
Intrauterine device (IUD); Perimenopausal period; Retention; Safety.
宫内节育器；围绝经期；滞留；安全性。
The apparatus permits easy and quick attachment (and removal) of the portable device to an object (i. e., the belt) while providing secure retention when not in use.
该设备允许便携式装置与物体(如腰带)的简易和快速的装接(和移动)，而又可以在不使用时提供牢固的夹持。
The apparatus permits easy and quick attachment (and removal) of the portable device to an object (i. e., the belt) while providing secure retention when not in use.
该设备允许便携式装置与物体(如腰带)的简易和快速的装接(和移动)，而又可以在不使用时提供牢固的夹持。
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