不可变的

Compared with the general single-tube model, this paper takes the horizontal bundle absorber as the research object, analyses the principal of dual-solution two-phase flow heat and mass transfer in absorber, introduces the wetting ratio to describe the incomplete wetting performance and view it as the changeable parameter to explain it's influence to total performance of absorber and cooling capability of evaporator.

与以往广泛采用的单管模型相比，本文采用了实际中应用较多的水平管束式吸收器作为研究的对象，对吸收器内二元溶液两相流动传热传质机理做了深入细致的分析，引入了润湿率 WR 这一参数来衡量实际运行中出现的管壁的不完全润湿特性，并将其作为可变参数分析它对吸收器总体性能以及蒸发器制冷能力的影响。

First the new total losses calculation method is implemented by means of the classification of variable loss and invariable loss. Hereby, the optimal voltage curve corresponding to the minimum total losses could be conveniently obtained according to the given torque curve. Then the calculation and implementing method for optimal voltage under every running condition are put forward by use of on-line measured field input quantities.

按照不变损耗和可变损耗新的划分方式得到相应的损耗计算方法；据此，根据给定的转矩曲线，能方便地得到总损耗最小所对应的最优电压曲线，进而提出由现场在线可测输入量求得各种工况下最优电压的方法。

Two independent delay lines operating with variable sample rate and a precise tape saturation algorithm with adjustable gain that allow for convincingly sounding simulation of tape delay, including all the exciting effects resulting from tape speed instability.

两个独立的延迟线经营与可变采样率和精确的磁带饱和算法与可调增益，让令人信服的冠冕堂皇的模拟磁带的延误，其中包括所有令人振奋的效果所造成的磁带速度不稳定。

In Chapter two, it is given of the three-dimensional boundary element and the boundary element space, Sobolev space for the contact boundary element problem with friction; it is proved of existence and uniqueness of the solution by variation inequality for the contact Boundary Element Method matrix equation under two kinds of condition that the contact zone is fixed and the contact zone is increasing along with the load; it is given of the expressionfor the error of the exact solution and the boundary element solution.

第2章，给出三维边界单元及边界元空间、有摩擦接触边界元问题的Sobolev空间，利用变分不等式证明了不变接触区和随载荷可变接触区两种情况下的接触边界元法矩阵方程解的存在唯一性，给出了准确解与边界元解的误差表达式，还证明了三维弹塑性摩擦接触问题凝缩矩阵解的存在唯一性，为三维弹塑性摩擦接触边界元法奠定数学基础。

And the solutions of arbitrary time-space elastic force equations of time-space variable system multi-linear vectors all are corresponding constant modulus multi-linear vectors, their time-space moving regular are: only change their directions but do not change their moduluses.

而任何时空可变系多线矢的时空弹性力方程的"解"，都是相应的"常模长多线矢"，它在时空的运动规律是：仅改变方向，不改变"模长"。

Berger said decades, how can we know without increasing the devices, such as: solution distillatory, fountain solution circulation system, the machine coated unit and expensive reverse osmosis water systems underlying business card printing and membership card during each of the variables of the control.

Berger说：经功不停发奋，我们懂得了如何才能在不补充摆设（例如：溶液蒸馏器、润版液轮回编制、在机涂布单位和腾贵的反渗透水编制等）的本原上差制卡和会员卡制息历程洋的每一个可变成分进行把持。

The most successful variable data business card printing and membership card making software should be as customer needs changing its own function.

最胜利的可变数据制卡和会员卡制息软件不该能随着客户需求的保持而保持自己的功用。

However, for B2C e-business, current development model does not fit to create flexible and variable system. That is to say, without redeveloping system, it is not simple, convenient or variable for users to change the function and style of the web pages and the structure of the web site.

而对于B2C电子商务系统而言，当前的开发模型并不能很好地实现B2C电子商务系统的灵活可变，即在不对系统进行二次开发的前提下，不能够让用户简单、方便、灵活地改变网页功能和表现形式以及网站的结构。

From this we can see that the characteristics of the equipment in the machine to plate as a digital business card printing and membership card-making machine in this way, will fall into a digital business card printing and membership card making is wrong, because it is necessary to use traditional printing plate business card printing and membership card modes and does not have variable information, which does not comply with the digital business card printing and membership card production characteristics.

由此特征我们可以看出，有些人把在机直接制版设备作为数码制卡和会员卡制作机，将这种方式归为数码制卡和会员卡制作是不对的，因为它是需要使用传统印版的制卡和会员卡制作方式并且不具备可变信息功能，这不符合数码制卡和会员卡制作的特征。

Our factory has advanced production equipment and years of production experience, the product has not picked buckle, and continuously line, automatic cable head, the needle away from the adjustable, variable speed, auto-trimming and other functions, to straw, wheat straw, mountain grass,such as the production of raw materials, production 0.5CM thickness of the packaging with a small±, but also can produce the thickness of 5cm of greenhouse insulation with±widely adapted to greenhouse, factory, to the system of plants, grass, road, wagon packaging and other industries.

本厂拥有先进的生产设备和多年生产经验，产品具有不挑扣、不断线、自动索头、针距可调、速度可变、自动切边等功能，以稻草、麦杆、山草、蒲草等作为生产原料，生产厚度0.5CM的包装用小草帘，也能生产厚度5CM的大棚用保温草帘，广泛适应于大棚、砖厂、予制厂、草皮、路面、车皮包装等行业。

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％。