back metal

基本解释

Within minutes they had peeled back the metal just enough for them to squeeze through.
几分钟内，他们成功地削出一个可供他们钻出去的金属洞。
starwarschina.com
What I do remember was how we were both so marveled by the electronic card lock on the hotel door as back then metal keys were still the norm.
我记得的是，我和他都对旅馆的电子卡片锁感到极度惊奇，那时几乎所有旅馆的门都还只用钥匙。
diq.me
The transducer consists of back metal cylinder, front cylinder , two groups of tangentially polarized piezoelectric ceramic piles and electric load.
该换能器由前后金属盖板、两组周向极化压电晶堆及电负载组成。

Or,he or she can place the hot glass on a metal table called a marver to shape the form by rolling it back and forth.
The material would then be shipped to France to be converted into metal rods before being delivered back to Tehran.

Most of Russia's aluminium plants operate by tolling, meaning that they rent out capacity to third parties, who deliver ore and take back metal.
ECONOMIST: A heavy toll
As a young patent lawyer in the early 1960s he went behind the Iron Curtain and brought back the metal sutures that gave birth to U.S. Surgical Corp. and the technology to make soft contact lenses.
FORBES: Death Grip