不常

In studing methods,partial func-tional differential equations sum up the theories and methods of ordinary differentialequations,partial differential equations,the semigroup theory and the fixed-pointtheory in functional analysis and the basic concepts,theories and methods suit-able for the partial differential equations with delay are formed.

偏泛函微分方程在研究方法上综合了常微分方程的理论方法和泛函分析中算子半群、不动点理论以及偏微分方程的理论方法，并形成了以时滞为基本特征的泛函微分方程的基本概念、理论和方法。

For us they were like a rampart night and day the whole time we were pasturing the sheep near them.

我们同他们一起放羊的时期内，不分昼夜，他们常作我们的护卫。

Secondly, the seat height to be adjusted when the pedal to the lowest point in time, your legs slightly bent can maintain the level of security so that he does not often have to adjust sitting.

其次，座位高度要调整到当踏板在最低点时，你的脚还可维持稍微弯曲的程度，以免坐不安稳，常要调整坐姿。

Inheritance of higher level total IgE may be autosomal dominant accompany incomplete penetrance.

总IgE超常的遗传方式可能是常染色体显性遗传伴不完全外显。

Comparison between the velocity distributions at the different flow rate conditions showed that increasing the flow rate was help to improving the velocity distribution. The periodic mean field on r-6 plane at different axis positions showed that the flow within the vaned diffuser, especially within the inlet region, was periodic unsteady when impeller located at the different circumferential position, just as the flow within the vaneless diffuser.

有叶扩压器内平均流场的分析表明，在定常流动的假设下，不同流量工况下有叶扩压器的内部流动也呈现为沿轴线向后盘方向推移流动状况逐渐恶劣的分布规律，表明二元叶片构成的平行直壁有叶扩压器对轴向不均匀流动的掺混作用仍然不大。

The procedure of his artistic creation, characterized with stability and permanency, is in accordance with that of the general practice.

从创作角度看，沙耆的绘画不是病理作用的产物，他的创作过程符合普遍的创作规律，具有恒常性和稳定性

For traditional film photogrammetry, the influence of this is often ignored.

对于传统的航空胶片摄影，大气折射造成的影响常被忽略不计。

Secondly, based on the piecewise continuous Lyapunov function andconstant Lyapunov function, the problems of robust guaranteed cost control forparametric uncertain sampled-data control systems are investigated by using the jumpsystem model and linear matrix inequality technique.

然后，针对参数不确定采样系统的鲁棒保性能控制问题，利用跳变模型和线性矩阵不等式技术，分别基于分段连续Lyapunov函数方法和定常Lyapunov函数方法研究了采样系统的鲁棒保性能控制器综合问题。

You used to piggyback me. You probably don't know how warm your back was.

你常背我。你大概不知道你的背有多温暖。

Hi, Ma. No, Ma, that's the pilot light.

嗨，妈，不，那是常燃小火本来就会亮的

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。