These react with nearby metal atoms and form tough, protective films a few molecules thick to ameliorate the damage.
这些液体将与周围金属原子发生反应，形成几个分子厚、坚固且具有保护性的膜，以修复表面的损害。
A saw consisting of a tough, fine - toothed blade stretched taut in a frame, used for cutting metal.
弓锯一种锯，由一条坚韧、利齿的锯条张紧在一个框架里构成，用于切割金属。
Ti is a very special metal texture is very light, but also very tough and corrosion resistance, it won't like silver will be black, lifelong keep itself at room temperature is tonal.
钛是一种很特别的金属，质地非常轻盈，却又十分坚韧和耐腐蚀，它不会像银会变黑，在常温下终身保持本身的色调。
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