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Silicon nitride is a kind of excellent ceramic material.
氮化硅是优良的陶瓷材料，应用广泛。
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The technology procedure of silicon nitride ball is introduced.
介绍了氮化硅球的加工工艺过程。
youdao
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The technology procedure of silicon nitride ball is introduced.
介绍了氮化硅球的加工工艺过程。
youdao