Dental alloy test pieces were made by casting, among them, 16 test pieces were Ni-Cr alloys and 8 ones were gold alloys.
采用铸造方法制作牙科合金试样，分别为：普通镍铬合金16个，贵金属合金8个，并对8个镍铬合金试件清洗后行镀金处理。
Dental alloy test pieces were made by casting, among them, 16 test pieces were Ni-Cr alloys and 8 ones were gold alloys.
采用铸造方法制作牙科合金试样，分别为：普通镍铬合金16个，贵金属合金8个，并对8个镍铬合金试件清洗后行镀金处理。
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