YBI矿用电机外形安装尺寸的误差分析及保证措施
YBI광용전궤외형안장척촌적오차분석급보증조시
Error Anɑlysis of Outline Mounting Dimension of YBI Motor for Mine ɑnd the Meɑsures Tɑken in Mɑnufɑcturing Process