自然法

In this paper, Galerkin method is employed. First, test functions to satisfy natural boundary conditions are selected. Then the approximate analytic formulations of the system frequency are derived. Meanwhile the approximate analytic formulation of the limit velocity is got.

采用直接法，首先选取满足自然边界条件的试函数，而后求出了系统固有频率的近似解析公式，同时也得到了极限流速的近似解析公式。

The floating gates, which have a hollow cavity inside, work according to Archimedes' principle of buoyancy. When compressed air is pumped in, emptying the gates of water, the buoyancy of the giant panels will be greater than their weight, and in just 30 minutes the barrier will float above the surface. The gates are attached to the seabed with hinges, which are designed to absorb the force of waves and keep the barrier in place. The gates will only be raised when waves are higher than 1.1 meters, to reduce interruption of the sea currents to a minimum.

这些中空的水闸门，主要依照阿基米德浮力原理操作，当闸门内注入高压空气排水后，闸门受到的浮力大於闸门重量，只要三十分钟就能浮出水面，闸门底部则用轴承固定在海底，再透过细部结构设计能够悉受波动力量，保持闸门的稳定性，而水闸门只有在浪高超过110公分的时候才会升起，把对海水交换的干扰降到最低，其他维护潟湖生态的措施也获得欧盟肯定，所以在2009年4月，取消摩西工程违反自然保育法的决议。

Story started at 1866, Aronnax was French, he is a natural historian, and he was studying a large monster under the sea.

故事发生在1866年，阿龙纳斯是法国人，他是一个自然史学家，他正在研究一只大海怪。

E. , plastic deformation developed into a critical state, local stress in dislocation-freezone will be equal to atomic bond strength, which will induce the initiation of SCC microcrack.

为了说明这个附加拉应力在阳极溶解型SCC中的主要作用，对不同含H〓O量的甲醇溶液，用慢拉伸法测量了SCC敏感性，同时测量了自然腐蚀时表层拉应力的大小。

Firstly, based on natural gradient and nonlinear principal component analysis, a matrix equation is obtained by block recursive updating,and then the matrix equation is solved using QR factorization and back substitution to obtain the optimal separating matrix.

此外，结合自然梯度和非线性主分量分析提出了一种块递归的盲源分离方法，构造出按块递归更新的矩阵方程，然后用QR分解和回代法求解该矩阵方程得到最优分离矩阵。

Firstly, based on natural gradient and nonlinear principle component analysis, a matrix equation is obtained by block recursive updating, and then the matrix equation is solved by using QR factorization and back substitution to obtain the optimal separating matrix.

首先基于自然梯度和非线性主分量分析，构造出按块递归更新的矩阵方程，然后用QR分解和回代法逐块求解该矩阵方程得到最优分离矩阵。

This paper introduces the natural thermocouple method of measuring the average cutting temperatures in deformed region during turning and analogous broaching.

本文介绍了进行车削和模拟拉削时，测定变形区平均切削温度的自然热电偶法，并介绍了消除附加电动势的方法和热电偶电动势的标定装置，给出了各种刀具材料和工件材料组合的温差电动势标定曲线。

Then it happened that I had to answer the call of nature, and, passing, I

碰巧我现在得对自然的召唤作出答复（正确译法：碰巧这时我想解

The predicting results can be used as the basis for design and practice of block caving.

预测结果可以作为自然崩落法工程设计与实施的参考依据。

On the condition that without destroying the object,this paper intends to introduce a more comprehensive way by using super-acoustic reflection after a practical analysis of several strength-testing curves made to the experimental old buildings natural cure.

本文利用超声回弹综合法对自然养护条件下长龄期卵石混凝土预留试块进行了测试，建立了超声回弹综合法测强曲线，并对测试结果进行了分析，对于长龄期混凝土测强技术的研究和应用，具有一定的参考价值。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。