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This method is based on the Snell law of acoustic propagation in water. Different velocity gradients among linear layers in water are utilized to draw the sound ray chart, and a mathematical model of the geometric operational range is built. Furthermore, the geometric homing range is predicted with sound ray density, a prediction system of geometric operational range for acoustic homing torpedo is designed and the function of the system is realized through a system software. The sea trial demonstrates the prediction validity of the system.

该方法基于声波在水中传播的Snell定律，利用水中各线性分层间不同的声速梯度，绘制声线图，建立了几何自导作用距离的数学模型，并通过声线密度对几何作用距离进行预报，设计了声自导鱼雷几何作用距离预报系统，并通过系统软件实现了其功能，经测试，该系统在海上试验中取得了良好效果。

It has been designed for acoustical technicians, sound engineers, scientists and students.

它被设计的声学技术，健全的工程师，科学家和学生。

Acoustical doors are doors specially designed and constructed for use in all situations when sound control is desired.

隔音门是专为需要控制声音的场合而设计和构建的。

Doors need to be designed so as to be acoustically "sealed" when closed.

门需要进行设计，以具有声学"密封"时关闭。

Many generators also have acoustically designed sound-management systems to minimize noise interference and vibration....

许多设计良好的声也发电机管理系统，以减少噪音和震动干扰

MethodThe expander on fat layer of the neck,upper chest,acromion and back were implanted,the flap was designed and the scar was reconstructed,and 20% saline was injected into the expander.

将扩张器置于颈部、上胸部、肩峰、背部等处真皮下血管网下含3mm厚的脂肪层，充分分离腔隙，术中注水量为扩张容量的20%。

A prototype of fault diagnosis system for acrylonitrile reactor is designed.

初步实现了丙烯腈故障诊断原型系统。

And I think the ACTA, or, again with its subculture of surveillance, encourages and is designed to, you know, put fear into people...

而我认为 ACTA 或其监视的亚文化，鼓励且被设计为，你知道，让人们恐惧。。。

They even designed the states development according to the western pattern.Their bold opening action is an integral cornerstone in Chinese modernization procoss.

然而他们的尝试终因他们自身的和社会的种种原因被湮没在封建老大帝国强大的文化优越感中，没能

A novel sliding-mode control is designed with a load thrust observer for the Linear Permanent Magnetism Synchronous Motors,in order to compensate the disturbance and effectively minimize the system chattering;introducing an integral action in the sliding mode to eliminate the system error and chattering.

针对永磁同步直线电机提出了一种基于负载推力观测器的新型滑模变结构控制，从而实现对推力扰动的补偿，且大大削弱了推力纹波及系统的抖振；在滑动模态中引入积分环节来进一步消除系统的稳态误差和系统抖振。

Chinese traditional virtue is humility and wariness,the compliment and praise to the others should be declination

中国人的传统美德是谦虚谨慎，对别人的恭维和夸奖应是推辞。如

We bought this house on the never-never.

我们以分期付款的方式买下这座房子。