To simplify the computation, the estimate equations of trajectory parameter of boost phase, crossover phase and maneuvering phase in ballistic missile's flying were brought out by approximate treatment according to the motion equation of mass center for missile in this paper.

METHODS: Each subject participated in a three-phase randomed crossover study. 2. Subject crossover.

方法：各受试者按随机交叉设计进行三次试验，分别为：（1）不服用药物；其次，学科交叉研究。

By adjusting mutation value and crossover value, novel genetic algorithm formed a positive feedback to accelerate searching speed and convergence speed.

其中遗传算法创新在于通过自我调节变异和交叉因子的值，形成正反馈机制，加速对解空间的搜索速度和收敛速度。

Crossover value is 4. 63%-10. 81%.

交换率为4.63%～10.81%。

Crossover value of the linkage was about 40.90.

抗瘟性与光敏不育性是连锁遗传的，交换值接近40.90。

Both Nan-Geng 15 and Zhong-Bai 4 have two linked dominant genes with crossover value 30% operating in the 3 strains at booting stage.

南粳15和中百4号均由两对连锁的显性基因控制，交换值为30%。

But, there exists cavitation phenomenon needed to pay attention to the first crossover culvert when the valve is near and after whole opening.

阀门接近全开至全开后，输水廊道第一分流口有空化现象。

A few forms of the crossover pipe-adjustment valve combination in vertical single pipe hot water heating system are analysed and compared each other in adjustment performance. Thus, the optimal combination form in adjustment performance is acquired.

对垂直单管热水供暖系统中几种跨越管&调节阀组合形式的调节性能进行了分析比较，从而得出调节性能最佳的方式。

Function and practical application of the crossover pipe-adjustment valve combination in vertical single pipe hot water heating system

垂直单管热水供暖系统中跨越管&调节阀的作用与做法

The disadvantage of class B operation is a large amount of" crossover distortion", which occurs when one tube of the push-pull pair cuts off and the other turns on.

的缺点B级操作大量的“交越失真”，这发生在一个管推挽对切断和其他打开。

Unless the idle bias is set too close to class A operation, efficiency gains similar to class B operation can be obtained, without the unwanted crossover distortion.

除非闲置偏见是太接近A级操作，提高效率类似B级行动可以得到，但不想要的交越失真。

By analyzing the reason of the distortion of the linear power converter, the design method of the power converter is improved, which eliminates the crossover distortion.

分析了线性功率变换器失真的原因，改进了功率变换器的设计方法，使其消除交越失真。

This crossover distortion looks like a notch, or flat spot, in the sine wave as it crosses the zero axis.

这交越失真看起来像一个档次，或扁平点，在正弦波作为穿越零轴。

Class A, discrete, transformerless preamplifier for transparency, extremely fast transient response and no crossover distortion.

A类，离散的，变压器的前置放大器的透明度，极快的瞬时反应，并没有交越失真。

The unbiased Darlington transistor was utilized to avoid crossover distortion and to improve power output for homing transmitting system.

为了解决自导发射系统的交越失真及输出功率问题，采用无偏置型达林顿管替代；

The true class A amplifier will have no crossover distortion, while the class AB amplifier will.

真正的A级放大器，也没有交越失真，而AB类放大器将。

We have just spent twenty minutes poring over a sketch map showing the Red Army's forced crossing of the Chishui River.

我们刚才花了二十分钟的时间仔细看了红军强渡赤水的示意图。

The Red Army then made a forced crossing of the Dadu River. What was the strength of the Red Army?

这时红军强渡了大渡河。红军的兵力有多少？

Environmental Problems Touched off by Solid Wastes Crossing the Boundary

固体废物越境转移引发的环境问题及对策

I understand perfectly what this is doing at the border crossing.

我完全了解现在边境乱到什么程度。

Activities The Causes of Illegal Border Crossing and the Countermeasures

非法出入境活动的成因及对策