查询词典 conic section

Curve functions of axial buccal crown and gingiva contour of each section were acquired by means of curve fitting, and the angle of emergence pofile was calculated, which represents the degree of undercut. Results There is unique relationship between axial crown and gingiva contour individually. This character of tooth is similar to its contralateral tooth.

结果 不同个体的牙冠轴面外形和牙龈外形有其特定的几何关系，同一断面的牙冠轴面外形曲线对应特定的牙龈外形曲线；同名牙同一断面的牙冠轴面外形之间及牙龈外形之间的重叠性很好。

Three cross-sections were made through crown and gingiva of the model tooth. Curve functions of axial buccal crown and gingiva contour of each section were acquired by means of curve fitting, and the angle of emergence pofile was calculated, which represents the degree of undercut.

以下颌第二前磨牙为研究对象，在牙列模型上通过牙冠部、牙龈作3个纵断面，用曲线拟和的方法得到每个断面的牙齿轴面外形及相应牙龈外形的曲线方程，以此分析两者之间的关系并计算牙冠起始外形角度，即倒凹程度的大小。

Working out technology and controlling the quality on supporting roller of belt conveyor;2. Theoretical analysis of deviation prevention for rubber belt by the slotted supporting roller with an angle of lead dip;3. A kind of dumbbell typed entirety supporting roller used for supporting the carrying belt and the wind leaf bucket-dustpan typed accumulated material mopping up device employed in sweeping up the accumulated material in the tail section we.

借鉴消化国外输送机械新技术，创新设计出具有全封闭式结构、拆卸性结构及全程底板耐磨设计特点的带式输送机；用于支承输送带的一种哑铃型整体式托辊，及用于自动清扫尾段积料的风叶畚斗式积料清扫器为其专有技术，这些结构及技术保证了带式输送机整机性能优良，输送量高、带速快，高效节能。

By prestack migration processing to the wide angle reflection seismic data of the Eryuan-Jiangchuan profile in Yunnan Province,we obtain a crustal reflectivity section which is similar to nearly-vertical incidence seismic data.

通过对洱源-江川宽角反射地震资料的叠前偏移处理成像，得到了一个类似于近垂直入射多道地震数据的记录剖面。

Using laser Doppler effect , based on measurement of the rotate speed of single section , the speed difference of double sections is measured and integrated , then the torsion angle of rotating shaft on torque effect is got. The non2contact torque measurement is realized , and dynamic monitoring of rotary machine equipment is achieved.

利用激光多普勒效应，在单截面测量转轴转速的基础上，采用双截面测量转速差并积分得到转轴在扭矩作用下的扭转角，实现扭矩非接触测量，达到回转机械设备的动力监测的目的。

Including the posterior turn angle of distal tibia , the twist height in the sagittal plane and the height of security zone for the screw in the distal tibia cross-section.

所测数据进行整合分析后根据其特征与厦门大博医疗器械公司联合设计研制胫骨远端后内侧解剖钢板。

The repudiated sense was that dear to many Protestants, according to which the term Catholic was a genus which resolved itself into the species Roman Catholic, Anglo-Catholic, Greek Catholic, etc. But, as the cardinal insisted, with us the prefix Roman is not restrictive to a species, or a section, but simply declaratory of Catholic.

"该否定意义上说，亲爱的，以许多新教徒，根据其中的任期天主教是一个属，其中自行解决到物种的罗马天主教，盎格鲁-天主教，希腊天主教等，但作为枢机主教坚持，"与我们的前缀罗马是不是限制性的一个物种，或一节，而只是宣示天主教。

Experimental studies on angular distribution of photoelectrons are suggested to obtain information on widths of some states, which cannot be obtained from total cross section measurements.

我们详细探讨这些共振附近角分布和极化参数的变化，以及其与共振位置与宽度的关系，并且提供将来实验探讨的面向。

It is still needed to do some work to determine the deformation parameter β2 for light odd-odd nucleus, like 6Li and to calculate all reaction channels by means of CDCC code simultaneously. It is important to measure the exclusive angular distributions of breakup fragments.In theory, the coupling channel equations have been deduced from one-dimensional to multi-dimensional barrier tunneling. The couplings between the entrance channel and the other channels have appreciable effects on sub-barrier fusion cross section. Instead of single fusion barrier,these couplings lead to a distribution of fusion barrier Dfus.

描述了已有理论，从简单的一维势垒穿透模型出发，引入多维势垒穿透和耦合道模型，证明入射道相对运动与碰撞核各种自由度的耦合导致熔合势垒的劈裂，较低的势垒有利于垒下熔合截面增强；给出了从熔合激发函数抽取势垒分布及从背角准弹激发函数抽取势垒分布的理论依据，以及它们的优缺点。

The quasi-elastic barrier distribution D〓 extends to low energy region and enhances the fusion cross section at the sub-barrier energies. It is still needed to do some work to determine the deformation parameter β〓 for light odd-odd nucleus, like 〓Li and to calculate all reaction channels by means of CDCC code simultaneously. It is important to measure the exclusive angular distributions of breakup fragments.

得到参数化的和能量相依的相互作用势公式；发现弱束缚核〓Li+〓Pb阈异常与〓Li的形变参数β〓相关，垒下存在强的吸收势；给出破裂对熔合截面的影响在垒上压底垒下增强；熔合势垒分布向低能端展宽，有利于垒下熔合截面增强等结果；对如何确定轻的奇-奇核的形变参量β〓提出了疑问；需解决如何用从弹散角分布抽取的光学势参数，进行CDCC程序全反应道统一描写；迫切需要破裂碎片关联测量的实验数据。

You can buy sweetened beverages, if that suits you.

你若喜欢的话，可以买些含有糖精的混合饮料。

As many of you are probably aware, Nick and Vanessa were recently faced with an embarrasing sex scandal after naked pictures of the two getting jiggy with it in a hot tub surfaced the net.

正如很多你可能知道，尼克和 Vanessa 最近面临一个尴尬的绯闻事件后，赤裸裸的图片两个越来越jiggy与它在浴缸中的一个热点浮现净。