准线

令α是一个以M为顶点、以c为准线的一个锥面，我们用ωM（c）表示α的顶点整角。

Let α be a cone with vertex M and directrix c. We denote the integral of the vertex angle of x by ω _M ( c ) .

基于白川德曲面的几何特征，将复杂的曲面共轭问题归结到准线上来讨论。

Based on the geometry characteristics of Bertrand surfaces , the complicated surface conjugation issue can be discussed with their directrix line .

TCA系统在小浪底大坝视准线观测中的应用

Application of TCA system to the collimating line observation in Xiaolangdi dam

但有一条准线：你如何生活那是你的选择。

The bottom line is : It'syourchoice how you live life .

海堤视准线观测的折光影响初析

On the Effect of Refraction on Collimation Line Observation for Marine Dam

大坝水平位移视准线观测方法及精度分析

Accuracy analysis on the methods of alignment of observing dam horizontal displacement

由平行平板提供的多目标空间准线

The multi-objective space datum line available through a paralleled plate

准线型四原子分子高激发振动能级的动力学李代数方法

Dynamical Lie Algebra Method for Highly Excited Vibrational State of Quasi-linear Tetraatomic Molecules

准线形对流系统中强度&速度负相关性的特征研究

Research of negative correlativity of reflectivity and radial velocity in quasi-linear convective system

视准线法观测土石坝水平位移精度研究

Research on Measuring Precision of Horizontal Displacements of Earch Dam by Collimation Method

准线型高分子量聚苯硫醚的合成研究

A Study of the Synthesis of Quasi-linear High-molecular-weight PPS

长距离准直新方法&连续视准线法

A new collimation method suited for long distance

在头倒立中找到准线是一件非常美好的事情。

When you find your line in Headstand , it 's a beautiful thing .

有什么东西滑出准线了。

Something had slipped out of alignment .

准线和其他丰富的视觉暗示

Guidelines and other rich visual hints

当你在山式中找到准线时，你就很容易在头倒立中找到平衡。

Once you find proper alignment in Tadasana , you 'll balance with ease in Headstand .

因此，线列阵管中校准方法是一种在低频情况下校准线列阵的十分有效的方法。

Obviously , the technique is a very efficient method to calibrate line array in low frequency .

但在大坝视准线法不等精度观测中，由该基本定权公式推导的实用定权公式与测量平差书上的实用定权公式不一致。

But the practical formula for deciding weight derived from this basic formula is different from tha written in the books of survey adjustment .

学习运用收束法来支持身体准线并增强僵硬部位的柔韧度。

Learning how to use the bandha ( muscle lock ) to support the body alignment and increases the flexibility of the stiff part .

所以，为了在这个体式中使用最少的时间和努力投入，学习头倒立准线是非常重要的。

So it 's well worth your while to put in the minimal investment of time and effort it takes to learn good Headstand alignment .

阶段的加强将导致电动子搬入对准线与定子杆，如此使磁性道路的勉强减到最小。

Energisation of a phase will lead to the rotor moving into alignment with the stator poles , so minimising the reluctance of the magnetic path .

遗憾的是，由于其矩阵表达式有些复杂，一般都将修改后的第一辅助准线表示为代数形式。

The pity is that the first auxiliary directrix after modification is generally expressed in an algebraic form , because of the complexity of the vectorial expression .

在扩音波以一条又一条多彩多姿的准线和电子键盘即兴重复的反作用力下，让每个人不知不觉地的偏离自己的坐位而彷佛置身在火之舞池。

Over the loud speaker a funky base line and an electric keyboard riff kick everyone out of their seats and set the dance floor on fire .

关于农村经纪人的权利、义务和责任，本文以居间为准线，界定了农村经纪人所享有的权利和应承担的义务，以及违反义务下的责任追究。

About the rights and obligations of the rural broker , the thesis consider intermediary as a base , defines the rights and obligations of the rural broker .

小浪底大坝是枢纽安全监测的重要部位，埋设了大量内部观测仪器，布设了8条视准线。

The dam is important for the safety monitoring of Xiaolangdi Multipurpose Dam Project because a lot of instruments and 8 collimating lines have been built inside the dam .

产品的识别性将会贯穿于对设计从构思到定案的全程，为设计创意活动设定一个相对明晰的准线。

Identification of the product will run through from conception to finalize the design of the whole , for the design of creative activities to set a relatively clear alignment .

基于这条准线，设计和建筑业可以以此为参考来保证所设计的新型建筑物运行更巧妙、健康、有效。

From this baseline , the design and construction industry can use this reference point to ensure that new or renovated buildings are designed to operate in a smart , healthy and efficient manner .

珊溪水电站大坝变形监测项目包括近坝区高程控制网和平面边角控制网、大坝视准线及沉陷观测。

The deformation monitoring items of the dam for Shanxi Hydropower Station include the elevation control network close to the dam area , plane control network of triangulation and trilateral , dam collimation line and settlement monitoring .

为了研究共轭条件的相容性，给出了反映各类共轭传动形式与准线特征的结构条件，并在此基础上建立共轭的微分关系式。

In order to examine the consistency of the conjugate conditions , the structure conditions reflecting transmission forms and the characteristics of the directrix are presented , and the differential expression of Bertrand conjugation is also set up .

对闸顶视准线的位移量的前馈人工神经网络模型预测研究表明，其精度较高，通过进一步的研究后可望推广到大坝安全监测实际中去。

The research on the displacement of the crest collimating line of the tower by feed forward Artificial Network model demonstrates that the prediction accuracy is high and can be spread in practical dam safety monitoring after further research .