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1.A Study of External Meshed Sliding—tooth Gear Specd—reducer
外波式活齿减速器的研究收藏指正
2.At the same time, an example for the manufacture of an internal gear shaver is presented through the modification of the longitudinal tooth shape of an external gear shaver.
同时，还列举了用标准的外剃齿刀经过齿向修形来制造内剃齿刀的例子。收藏指正
3.The results showed that the fracture of the tooth-razor was brittle fracture, the material quality was normal, the main fracture reson was that the carbide in the microstructure of the tooth-razor was distributed as reticulation, the brittleness of the razor was increased and the toughness was decreased, so the tooth of the razor was broken by external force when it was working.
结果表明，该剃齿刀的断齿属于脆性断裂，主要是显微组织中的碳化物分布不均匀（呈网状分布），使刀具的脆性增大而强度、韧性下降，导致刀具在使用过程中由于外力的作用发生断齿。收藏指正
4.In the paper, the cartesian coordinates tooth profile equations of external and internal spur gear generated with pinion cutter was derived with the profile normal method, and the calculating method of starting and final point of each curve was given.
应用齿廓法线法,推导出插齿加工的直齿内、外齿轮的直角坐标齿廓方程,给出了齿廓各段曲线起点与终点的确定方法。收藏指正
5.Through enlarging the top fillet arcs radii and meanwhile reducing the addenda of the tools, an improvement on basic profiles of rack kind tools is proposed to improve the tooth bending strength of the external involute cylindrical gears.
为提高外啮合渐开线圆柱齿轮的齿根弯曲强度 ,针对齿条型刀具提出了减小刀具齿顶高并同时加大其齿顶过渡圆弧半径的改进方案。收藏指正
6.In recent years, much attention was paid to the aetiology of tooth wear, however, most of researches focused on the epidemiologic investigation and some external causing factors (such as erosion by acidic substance, abrasion by solid granules, and the effect of some systematic diseases or drugs, and etc).
近年来关于牙齿磨损病因的研究很多，但多局限于流行病学调查以及一些外部因素诸如酸性物质的腐蚀、外来固体颗粒造成的异常磨损和全身性疾病或药物的影响等。收藏指正
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