简便

To simplify the convenient method of the translation of double intergral and based the translation of definite integral and relevant knowledge of double integral , a simple and convenient method is introduced.

为简化二重积分换元公式的推导，利用定积分的换元法及二重积分的有关知识，提出了一种简便的推导方法

The theoretical calculations for the mid-span deflection and bottom plate strain of the steel girder are found to be in good agreement with the experimental results. This indicates that the model established and the governing differential equations derived in this dissertation are correct and efficient.

论文中所提出的预应力简支钢箱梁理论的分析方法，对解决配置有曲线型预应力钢索的钢梁的非线性问题来说是一种精确而简便的计算方法。

In addition, some convenient ways have been put forward to get degree-day.

此外，一些研究也提出了几种简便的度日计算方法。

The results showed that recirculation fumigation using AlP tablets dynamic deliquescence in ventilation ducts,which can be manipulated outside the warehouse,was safe,effective,economical and easy operation,and was a method of producing gas matched with phosphine circutation fumigation.

风道投药的实仓试验表明：环流熏蒸的动态潮解法安全、有效，可在仓外操作，是一种操作简便、使用经济、与环流熏蒸配套的产气方式。

According to Principle of quiescent sedimentation granula analysis, the densimeter method and the piette method are used to get the size grading of fine-grain soil and the errors of two methods are analyzed.

根据静水沉降颗粒分析法计算公式原理，分别采用了常用的密度计法和移液管法求取细颗粒土的粒径级配，分析了两种方法试验误差产生的原因，并证明密度计法较移液管法具有更简便、准确、节能的特点，建议尽量采用密度计法。

So to get an ordinary generating method of probability density function is greatly important for traffic researcher and engineer.

为此，寻求一种简便的产生概率密度函数的统一方法是十分必要的。

Based on a series of shear creep tests of discontinuous plane with regular dentation,the relationship between shear creep and different normal stress,shear stress,and slope ratio is obtained.

文章在规则齿形结构面剪切蠕变试验的基础上，分析了剪切蠕变随不同的爬坡角、正应力和剪应力的影响，拟合了剪切蠕变曲线，并将拟合的方程与Burgers模型的本构方程进行了比较分析，讨论了Burgers模型中剪切模量、粘滞系数的变化规律及其影响因素，取得了较为理想的结论，为结构面剪切蠕变本构方程的建立提出了较为合理简便的方法。

On the basis of method of derivative on the left and the right of separable function,the derivability of separable function on demarcation point was simply distinguished,and derivative continuity on demarcation point discussed.

运用研究分段函数的导函数的左、右极限的方法，简便地判明分段函数在分界点处的可导性；同时讨论了分界点处导数的连续

In this paper, a simple formula is derived to calculate the tape quantity in tape overlap wrapping .

本文推导了一个用来简便计算布带重叠缠绕胶带用量的公式。

A simple formula is derived to calculate the tape quantity in tape overlap wrapping.

本文推导了一个用来简便计算布带重叠缠绕胶带用量的公式。

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％。