hard solder造句

"hard solder"是什么意思

造句与例句手机版

Hard solders contain 4 percent silver in addition to tin and lead and have a melting point above 1, 000 degrees.
In silversmithing or jewelry making, special hard solders are used that will pass rouge is also used to prevent joints from desoldering.
It's difficult to see hard solder in a sentence. 用hard solder造句挺难的

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