切线

Analyses show that the theoretical form of camber curve should be a parabolic curve of 4 degree with horizontal tangents at both beam ends, while the common crane building praxis uses a parabola of 2 degree.

分析结果指出，合理的预拱曲线应当是两端具有水乎切线的四次抛物线，而不是通常采用的二次抛物线。

Objective:To seek a easy and perspicuous method for fixing the galactophore ISO tangent field.

目的：寻找一种简单明了的乳腺切线野等中心定位方法。

Upon to Ljapunov's concept of motion stability, the dynamic instability should be understood as the existence of at least one perturbed motion, which is initially in the small neighbourhood of the undisturbed motion and which starts at t =t〓, when is singular for the first time, depart monotonically from the neighbourhood, this phenomenon is proposed to be referred to as the quasi-bifurcation phenomenon.

按J〓运动稳定性概念，动力失稳应理解为在基本运动的小邻域内至少存在一种干扰运动会偏离基本运动并单调增长，偏离发生在时刻t=t〓，此时切线刚度矩阵奇异。这是所谓准分叉现象。

During the middle to terminal propulsion phase, the optimized force vector is not tangential to the handrim and instead, it pass through the upper arm segment which is comparable to dynamic wheelchair propulsion.

在推动中期至末期，最佳轮椅推动向量并不是在接触点轮圈的切线方向，且此向量方向会通过上臂肢段；这些都是和动态轮椅推动的表现相同。

Finally, state some special circumstances during relative motion plotting , in this paper, the tangent selective mode, which is an important reference for the ship′s navigatorswas provided.

最后对相对运动作图过程中所遇到的特殊情况做了详尽的论述，给出了切线的选择方法，为船舶的驾引人员提供了重要的参考。

Pressure Angle is the angle between a line tangent to an involute and a radial line through the point of tangency.

压力角：压力角是花键的渐开线齿廓的切线与通过切点的半径所组成的夹角。

Setting out the main way to coordinate, polar coordinate method, angle of law, such as tangent offset method.

放样的方法主要要坐标法、极坐标法、偏角法、切线支距法等。

An analysis of living example was carried out by the use of C language programming and obtained the tangential polar coordinates equation of the optimal pitch curve of noncircular chain wheel.

探讨了非圆链轮传动中，基于理论松弛量的非圆链轮节曲线的优选，建立了在最小理论松弛量时，非圆链轮节曲线优选的数学模型，并利用C语言编程进行了实例分析，得出了最优非圆链轮节曲线的切线极坐标方程。

In this paper the sands' physics-mechanics properties were measured with the sample of northwest desert in China, taking WTC5120TSM desert vehicle as the object to study the desert trafficability, presented the formulas of tangential tractive force and motion resistance, taking the pothook tractive force and the traction coefficient as the evaluating indicators of trafficability.

以我国西北部沙漠为样地测定了沙土的物理－力学性质，以WTC5120TSM沙漠车为对象进行了沙漠通过性的研究，给出了切线牵引力和行驶阻力的计算会式，以挂钩牵引力和牵引性系数作为通过性的评价指标。

In this paper the sands＇ physics-mechanics properties were measured with the sample of northwest desert in our country, taking WTC5380TSM desert vehicle as the object studied the desert trafficability, presented the formulas of tangential tractive force and motion resistance, taking the pothook tractive force and the coefficient of traction as the evaluating indicator of trafficability.

淮阴工学院，江苏淮安223301摘要：以我国西北部沙漠为样地测定了沙土的物理一力学性质，以WTC5380TSM沙漠车为对象进行了沙漠通过性的研究，给出了切线牵引力和行驶阻力的计算公式，以挂钩牵引力和牵引性系数作为通过性的评价指标。研究表明，WTC5380TSM沙漠车在该沙漠中有较好的通过性能，能够满足交通运输作业的要求。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。