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Methods of preparing tetramethylammonium hydroxide are summarized, advantages and disadvantages of these methods are compared.

总结了几种制备四甲基氢氧化铵的方法，比较了各种方法的优缺点，介绍了其在不同领域的应用情况。

Drinking water before going to bed is also very important, there is concern that the disadvantages of起夜, in fact, as long as the night-time to understand the danger of water shortage, there would not have this concern, and for elderly patients with hypertension, renal function as a result of recession and an increase in nocturnal, but also increase plasma concentration and platelet hyperfunction cohesion, therefore, in order to reduce the risk of thrombosis, drinking water before going to bed, and even the middle of the night almost on a daily basis, it is particularly necessary.

睡前饮水也很重要，有人担心起夜之弊，其实，只要明白夜间缺水的危险性，就不会有此顾虑了，对于老年高血压患者，由于肾功能衰退，夜尿增多，更增加血浆浓缩和血小板凝聚力的亢进，所以，为了降低血栓形成的危险性，睡前饮水，甚至夜半补水，尤为必要。

The solitary wave can be generated considering Goring and Raichlen's movement of a paddle. The proposed original linear solution for the solitary wave generation is expressed in the hypergeometric function. Two disadvantages of the original solution with large trailing wave and skewed wave profile are found by comparing with the theory of solitary wave derived from Boussinesq's equation.

本文并以弱非线性的孤立波造波问题做为解析之对象，由於孤立波造波板速度为一超越函数，造成解析上的困难；本文以 hypergeometric 函数推求常微分方程式之全解，并与理论波形解比较后，发现由於未考虑非线性及分散性过强等问题，使得线性暂态解较理论波形拉长与歪斜，可能无法有效描述孤立波造波问题，故针对线性之分散关系做出修正。

The solitary wave can be generated considering Goring and Raichlen's movement of a paddle. The proposed original linear solution for the solitary wave generation is expressed in the hypergeometric function. Two disadvantages of the original solution with large trailing wave and skewed wave profile are found by comparing with the theory of solitary wave derived from Boussinesq's equation. The difference between the original linear solution and the solitary wave theory results from the nonlinearity and dispersion of generated waves in the flume.

本文并以弱非线性的孤立波造波问题做为解析之对象，由於孤立波造波板速度为一超越函数，造成解析上的困难；本文以 hypergeometric 函数推求常微分方程式之全解，并与理论波形解比较后，发现由於未考虑非线性及分散性过强等问题，使得线性暂态解较理论波形拉长与歪斜，可能无法有效描述孤立波造波问题，故针对线性之分散关系做出修正。

Nowadays, the switches which are being studied or applied, such as gas spark gap, thyratron and ignitron, etc, are of different structures, operating principles, advantages and disadvantages, and are applied in various situations and fields.

目前处于试验中或者投入实际应用的开关元件很多，如火花放电间隙、闸流管、引燃管等，它们有不同的结构、原理和优缺点，应用在不同的场合和领域。

Because the MLS is used in this method, the disadvantages of the method are its less efficiency, and can form an ill-conditioned or singular equations sometimes.

但是移动最小二乘法的使用影响了该方法的计算效率，而且很容易形成病态方程组。

They suffer disadvantages at almost every turn, and endure disproportionately high rates of ill-health, unemployment and imprisonment.

他们的人生几乎每一阶段都处于不利地位，患病、失业和监禁的人数大大高于他们的人口比例。

Both advantages and disadvantages of CCD camera and scanner used as image acquisition equipment for leaf area measurement using image processing methods were discussed in this paper.

分析了图像处理方法测量叶面积中采用CCD照相机和扫描仪2种采集设备各自的优、缺点。

Secondly, Dupont's photopolymers are imitatively prepared, but two disadvantages are found.

第二，依照Dupont公司的光致聚合材料配方和工艺，制备了有机材料HPF1#。

Using heating plate can result in non uniform heating and poor accuracy, while the disadvantages of immersion heater are interferences between samples and digestion device.

本项目创造性使用预制石墨块作为导热媒质，把浴式加热和平板加热二者的优点结合在一起，解决了上述问题。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。