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Y
yard layout �������yarding ���ڶѴ�yearly output �����yellow brass ��ͭyellow copper ore ��ͭ��yield ����;������;�³�;����yield optimization ��������ѻ�yield point ������yield timbering ������֧��yieldable �����Ե�yieldable arch �����Թ���֧��yielding ������yielding arch �����Թ���֧��yielding prop ������֧��yielding support ������֧��yoke plate ���young's modulus ����ģ��ytterbium ��yttrialite ���ƿ�yttrium ��
Z
zar ��zaratite ������zeolite ��ʯzero level ����zero point ���zero position ��λzero potential ���λzero setting ��λ��zig zag roadway �������zinc пzinc blende ��п��zinc spar ��п��zinc spinel п�⾧ʯzincite ��п��zinkenite ����Ǧ��zinnober ��ɰzinnobr ��ɰzinnwaldite ����ĸzircon �ʯzirconium �zirkelite ����ʿ�zoisite ��ʯzonal ��״��zone ��zone of compression ѹ����zone of contact �Ӵ���zone of fracture ���Ѵ�zone of oxidation ������
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