查询词典 chisel tooth

Free radical contents of the tooth enamel in 25 children permanent tooth and 35 milktooth samples were measured by electron spin resonance technique, and the relationshipbetween free radical content of the tooth enamel and radiation dose was also investigated.

本文用电子自旋共振技术，对25个儿童恒牙和35个乳牙釉质样品中的自由基含量进行了测定，研究了牙釉质中自由基含量与辐射剂量的关系。

And the polar angle and the polar radius was represented into AutoCAD polar coordinate, the involute was drawn through the spline linear tool. And then, a section of the involute was intercepted with the diameters of the point circle and the root circle, used it as the tooth face of the spline. The involute tooth thickness was drawn using the diameter of the divided circle and the tooth-form was drawn through rotating, mirroring image and cutting.

根据DIN 3960渐开线花键的坐标值，用EXCEL函数功能计算出不同压力角下渐开线的极角和极半径，表示成AutoCAD极坐标并通过样条线工具绘制出渐开线，再用齿顶圆和齿根圆直径截取一段渐开线作为为花键齿面，并用分度圆直径绘制出渐开线齿剖面，经镜像和裁剪便可绘制出渐开线齿形。

Besides, the relationships among the tooth numbers and the helical angles of the helical type shaving cutter, the tooth surface deviations and tooth contact conditions are also investigated.

同时，本论文也根据齿面接触分析之结果探讨创成Helipoid齿轮的螺旋型刮刨刀之齿数、螺旋角与齿面差异以及齿面接触情形间的关系。

If the dial indicator reads 0.14~0.3mm , it means the tooth clearance is right; You can also use a 15~20mm long and 0.5mm thick lead sheet or "∽"-shaped fuse . Put the sheet or fuse between the unengaged tooth flanks tha is between the convex surface of small bevel gear and the concave surface of the large bevel gear. Turn the gear, then the pressed thickness of the big lead sheet end suggests the normal tooth clearance of this site.

另一种方法是用长15~20毫米，厚0.5毫米的铅片或弯成"∽"形的保险丝，放入两齿轮非啮合的齿面之间（即小锥齿轮的凸面和大锥齿轮的凹面之间），转动齿轮，则铅片在靠近大端处被挤压的厚度即为该处的法向齿侧间隙。

B The gear real tooth surface is represented by a sum of two vector function that determine the theoretical tooth surface and the deviations of the real surface from the theoretical one, and the tooth contact analysis of real surface is completed.

将实际齿面表示为理论齿面和偏差曲面之和，进行了实际齿面的轮齿接触分析。

It turned out that the previous tooth ache wasn't because of the tooth decay but wisdom tooth!

之前的牙痛并不是因为蛀牙，而是因为要长智慧牙！

Through the comparative analysis that: the arc-tooth flow of hydraulic performance is better than the arc, Adopting optimize the design parameters of the structure, reducing the flow rate of 0 regions, and strengthen vortices regions, improved irrigation arc tooth for hydraulic performance and anticlogging ability, irrigation design recommended by arc-tooth flow structure.

通过对比分析认为：弧齿形流道水力性能优于弧形流道，可以通过结构参数优化设计，减小0流速区域，强化旋涡区，提高弧齿形灌水器的水力性能与扰堵塞能力，灌水器设计中推荐采用弧齿形流道结构形式。

In the paper,the transmission of designed roller oscillating tooth reduction gear adopts osci llating tooth gear drive without exception,one-stage reduction gear and two-stage reduction gear have joined through spline coupling band;The joining way of shock wave thellomble and oscillating tooth adopts the biserial bearing of without inner ring of needle bearing,and directly adopts bearing outer ring as shock wave thellomble;Center wheel of two-stage reduction gear and center wheel of two-stage reduction gear passes through taper thread,and center wheel is fixed;As soon as the flange of input end and center wheel of one-stage reduction gear,the flange of export end and center wheel of two-stage reduction gear makes monobloc structure.

本文预设的井下减速器的传动均采用活齿传动，一级减速器的输出轴和二级减速器的输入轴通过花键联轴套联接；激波环与活齿的毗连方式采用能蒙受较大载荷的无内圈双列滚针不锈钢管，且直接采用不锈钢管外圈作为激波环；一级减速器的中心轮和二级减速器的中心轮是通过锥螺纹毗连的，且中心轮固定；一级减速器的中心轮与输入端的法兰盘，二级减速器的中心轮与输出端的法兰盘均做成整体的结构。

In the paper,the transmission of designed roller oscillating tooth reduction gear adopts oscillating tooth gear drive without exception,one-stage reduction gear and two-stage reduction gear have joined through spline coupling band;The joining way of shock wave thimble and oscillating tooth adopts the biserial bearing of without inner ring of needle bearing,and directly adopts bearing outer ring as shock wave thimble;Center wheel of two-stage reduction gear and center wheel of two-stage reduction gear passes through taper thread,and center wheel is fixed;As soon as the flange of input end and center wheel of one-stage reduction gear,the flange of export end and center wheel of two-stage reduction gear makes monobloc structure.

本文设计的井下减速器的传动均采用活齿传动，一级减速器的输出轴和二级减速器的输入轴通过花键联轴套联接；激波环与活齿的连接方式采用能承受较大载荷的无内圈双列滚针中国财经圈，中国财经圈，且直接采用进口中国财经圈外圈作为激波环；一级减速器的中心轮和二级减速器的中心轮是通过锥螺纹连接的，且中心轮固定；一级减速器的中心轮与输入端的法兰盘，二级减速器的中心轮与输出端的法兰盘均做成整体的结构。

In a recent study, the researchers found that prolonged consumption of sports drinks may be linked to a condition known as erosive tooth wear, in which acids eat away the tooth's smooth hard enamel coating and trickle into the bonelike material underneath, causing the tooth to soften and weaken.

研究人员发现长期饮用运动饮料会导致腐蚀性的牙磨损，因为一些酸类会侵蚀牙齿表面光滑而坚硬的釉外壳并渗入内部的牙骨质，从而导致软化衰弱。

Chinese traditional virtue is humility and wariness,the compliment and praise to the others should be declination

中国人的传统美德是谦虚谨慎，对别人的恭维和夸奖应是推辞。如

We bought this house on the never-never.

我们以分期付款的方式买下这座房子。