primary storage medium

基本解釋

Since the dawn of the digital computer age, long-term data storage and backup have been the province of a single primary medium: magnetic tape.
虛擬磁帶自數(shù)字計算機時代曙光初現(xiàn)，數(shù)據(jù)的長期儲存和備份就一直是由磁帶這個單一的重要介質(zhì)擔(dān)綱。
Using medium-sized sand, fine sand, silts, silt clay as primary representative soils in aerated zone under ash storage yard, the water leakage characteristic in aerated zone was experimented.
以中砂、細砂、粉砂、砂質(zhì)粉土和粉質(zhì)粘土爲(wèi)貯灰場底部包氣帶的主要代表土層，試騐研究了貯灰場灰水在包氣帶土層中的滲漏特性。