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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。

First, a program which can be used to obtain the encoder values of each joint D. C. servomotor and then change them into angular position is developed. By means of cubic spline, the angular velocity and angular acceleration are calculated.

本文开发了实时采集和转换机器人各关节的码盘值为角位移的程序，并提出了以三次样条函数求各关节角速度和角加速度的方法，提高了计算精度。

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。

The structure of anisaldehyde was identified by means of IR and GC-MS.

并通过红外光谱和气质联用对目标产物进行表征。

By means of experiment and analyzing with comparison,it was poi nted that the existence of moleculear calcium in brine is the main causes for Ca ion of anolyte increasing.

通过试验并分析比较，指出盐水中分子钙的存在是导致阳极液Ca2+升高的主要因素。

In reality, the female image, by means of the mass media, always appears before the people ahead of the realistic female, and it is the antecedency of image that enables the female image to replace successfully the female in reality, to win the more superior status than the female in reality and to possess the function of normalization, summon and guidance.

在实际生活中，女性形象借助各种大众传媒常比实际的女性先期地到达人们面前，正是形象的这种先行性，使得女性形象成功地置换了作为现实存在的女性本身，赢得了比实际的女性更为优越的地位，并具有了规范、召唤与引领的作用。

Biological characters of soybean anthracnose pathogen were studied by means of different temperature,humidity,pH,light and nutrient condition.

分别用不同温度、湿度、pH 值、光照和营养条件进行了大豆炭疽病菌生物学特性的研究。

By means of inclusion thermometry and authigenic illite dating data,the oil and gas migration and accumulation model in the central anticlinal zone in the Xihu Sag of the East China Sea Basin has been studied.

利用包裹体测温和成岩矿物伊利石测年数据资料，对东海盆地西湖凹陷中央背斜带油气运移及成藏的基本模式进行了研究。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。