The bare metal was sprayed with several coats of primer.

裸露的金属被喷了几层底漆。

《柯林斯英汉双解大词典》

It runs without the need for an underlying operating system - something called "running on the bare metal" (see Resources).

它无需底层操作系统便可运行—也就是所谓的“在裸机上运行”(见参考资料)。

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A car parked beside the house was burned to the bare metal, its Windows shattered.

停在房屋边上的一辆小车已被烧得只剩金属骨架，窗玻璃碎了一地。

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Many say that perhaps 10% of patients who get stents should get the bare metal kind, and that the almost instant switchover to drug-coated stents that occurred after the products were launched was an overreaction.

FORBES

Unlike the other studies, the data do not come from patients who were randomized to get either bare metal stents or the newer drug-coated version.

FORBES: Stents, Smoke And Fire

But arteries often heal around the old, bare metal stents in a process called restinosis, re-clogging them and necessitating a second procedure.

FORBES: Magazine Article