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1.According to the tested results, the main cutting edge of drill point is chiefly subjected to torque, its torque is 83 4%～90 5% of the total torque, but the chisel edge of drill point is mainly subjected to thrust, its thrust is 77 0%～84 5% of the total thrust.
测试结果表明 ,钻头主切削刃和横刃轴向力分别占总轴向力的 1 5 5%～ 2 3 0 %和 77 0 %～ 84 5%,主切削刃和横刃的扭矩分别占总扭矩的 83 4 %～ 90 5%和 9 5%～ 1 6 6%,说明钻头轴向力主要由横刃承担 ,而扭矩主要由主切削刃承担。收藏指正
2.High and new technology is the main embodiment and symbol of cutting-edge productivity and a strong driving force for the progress of human society.
高新技术是先进生产力的集中体现和主要标志，是推动人类社会发展进步的强大动力。收藏指正
3.The main disrepair mode is oxidation wear in drillingZrO_2/CePO_4. However, the main rupture modes are plastic deformation ofcutting edge, flaw, scaling, fragmentation and pock on cutting edge.
加工ZrO_2/CePO_4时钻头失效的主要原因是氧化磨损,加工氟金云母时刀具破损的型式有切削刃塑性变形、裂纹与剥离,崩刃,后刀面麻点等。收藏指正
4.Angle of cutting edge, cutting point, grinding surface are three main structural parameters of sharpened band knife which describe the band knife section shape.
本文讨论了剖层机带对开刃之后显示带刀断面形状的主要结构参数：结构锋和角、刀刃点（刀口）、磨面三者之间的关系。收藏指正
5.It showed that the main mechanism of CrNiMo martensitic liner board steel was spalling of extrude hardened edge at earlier stage,and changes into slight corrosive wear and slight fatigue spalling during impact abrasion process,while the main mechanism of CrMnMo martensitic liner board steel was micro-cutting at earlier stage,and changes into moderate corrosive wear and more deeply fatigue spalling.
结果表明:在相同工况条件下,CrNiMo马氏体衬板钢的冲击腐蚀磨损机制前期主要是挤出硬化棱脱落,后期转变为轻微的腐蚀和浅层疲劳剥落; CrMnMo马氏体衬板钢的冲击腐蚀磨损机制前期主要为显微切削,后期转变为中度腐蚀以及较为深层的疲劳剥落。收藏指正
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