包埋料和铸道参数对Ti-24Nb-4Zr-7.9Sn合金铸流率的影响
포매료화주도삼수대Ti-24Nb-4Zr-7.9Sn합금주류솔적영향
Effects of different types of investments and parameters of sprue on the castability of Ti-24Nb-4Zr-7.9Sn alloy
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