查询词典 tooth fairy

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。

The technical characteristics of the invention is that: the rotor end face tooth profile contains four, five or six sections of tooth curves with the circular nature; when it has five sections, addendum circular arcs and dedendum circles are added to the addendum or the dedendum of the rotor; when it has six sections, both the addendum circular arcs and the dedendum circles are added to the addendum and the dedendum of the rotor at the same time, to form four different combination schemes; there are common tangents at the connection points of the two adjacent teeth forming curves, which has a smooth tooth-profile without cusp, a high-wearing feature, a long life of the rotor, a small leakage triangle, and a good sealing property.

本发明的技术特征是：转子端面齿型是包含四段、五段或六段圆弧性质的齿曲线；当为五段时，在转子的齿顶或齿根加上齿顶圆弧或齿根圆弧，当为六段时，在转子的齿顶和齿根同时加上齿顶圆弧和齿根圆弧，形成四种不同的齿型组合方案；相邻的两组成齿曲线的连接点处具有公切线，齿型光滑，没有尖点，耐磨性好，转子的使用寿命长，泄漏三角形小，密封性好。

Dealing with whether to keep or to rcmove activity tooth tissue valve of upper one third of rout diastema can be divided into experiment group and control group. Experiment group: keeping activity tooth tissue valve and restore it as told above. Control group: extracting activity tooth tissue valve. And then treat it in a routine way as root-canal therapy, restoration with baked-porcelain crown and metal crown.

对牙根上1/3纵裂的活动牙组织瓣的去、留分实验组和对照组，实验组：保留活动牙组织瓣，按上述方法修复；对照组：拔除活动牙组织瓣，常规根管治疗，桩钉固位，烤瓷冠或金属冠修复。

Using two-flank-staining method, inspect the tooth flanks of the driven bevel gear, 3 to 4 equispaced spots along the circumference, at each spot apply color to 2 to 3 teeth, the correct meshing print requirements are: print width in the direction of face width not less than 50% to 60% of the facewidth , and that in the direction of tooth depth not less than 40% to 50% of the tooth depth.

用两面着色法，在从动锥齿轮的齿面检查，沿圆周均布3-4处，每处2-3齿涂色，正确啮合印迹要求为：在齿宽方向的印痕宽度不小于齿宽的50%---60%，在齿高方向的印痕宽度不小于齿高的40%---50%。

Before machining, we can check the gear's tooth shape easily so as avoiding tooth's abnormity. We can measure tooth parameters, and get the figurate cutting tool's dimensions.

在加工之前，便可对齿轮副的齿形进行检查，防止齿形发生异常；可以测量齿形数据，以确定高速铣削用成形铣刀的尺寸数据。

Absctrct: Objective This study was designed to investigate the stress distribution in the surface of tooth and peridental tissues and the initial displacements of tooth in the maxillary under two orthodental simulating force rectangular archwire with T loop and II class elastic used clinically by the 3-D finite element method so as to clarify the biomechanism of orthodontic tooth movement and component of optimal orthodontic force system.

目的：通过有限元分析法比较两种工况下上颌各牙齿的位移趋势和牙根及牙周支持组织内的应力分布规律，为临床治疗中合理选用矫治力系统以便有效的控制牙齿移动类型提供可靠的理论依据。

More direct, directer ; most direct, directest

径直的，笔直的

Do you know how to use a chain saw?

你知道如何使用链锯吗？