查询词典 rectangular parallelepiped

In addition,it is found that the width of the corresponding waveguide of the rectangular cavity has an essential effect on the number of solutions for the resonance condition equation.

结果表明，随着横向尺寸的减小亚波长谐振条件的物理解数量将逐渐增多直至趋于无穷。

It is concluded theoretically that when the signal pickup microphone is placed on one of these points, a corner in a rectangular room for example, any increment in open-loop gain of the secondary system will multiply the damping of reverberant sound field.

只要把次级系统的信号拾取传声器置于这类特征点上，比如在矩形空间中三面相交的墙角处，则次级系统开环增益的增大，就相当于增大了整个混响声场的阻尼。

In the experiments, the accelerometer and the microphone are used respectively to measure the acceleration on the panel and the sound pressure in the cavity. Piezoelectric ceramics Transducer is used as the control source to control reverberant sound field transmission through a simply supported rectangular aluminium panel into a concrete cavity.

实验中采用加速度计和话筒作为传感器拾取板振动的加速度和闭空间内的声压信号，用压电陶瓷片作为振动控制源来控制混响声场通过简支矩形铝板向混凝土闭空间的声传入。

After that, the important equation for calculating reverberation time is given based on the definition of reverberation time and least squares method. Finally, we use our new method to calculate reverberation time in a rectangular enclosure; we also compare our results with those given by experiment and Sabine's equation. The comparison shows that the new method is more effective and accurate than Sabine's equation in calculating reverberation time of small enclosures.

给出了描述小尺度封闭空间内声场的有限元模型；在该模型的基础上推导了计算小尺度封闭空间内混响时间的方法，并编制了相应的计算机程式；在算例部分，计算了一矩形封闭空间内的混响时间，通过与实验结果进行比较，验证了这一方法的正确性。

The south-Heuksan basin in the South Yellow Sea was delineated as rectangular to rhombic shape and a di mension of 32×13 km.

南黄海中的南HEUKSAN盆地是一个介于矩形到菱形之间、大小大致为32 km×13 km的盆地。

In geometric mimicry of Rickettsia's comet tail, the researchers used atomic force microscopy to demonstrate patterned polymerization on one side of a rectangular DNA origami (a method of constructing nanoscale objects recently invented by coauthor Paul Rothemund).

在模仿立克次氏体的"彗尾"过程中，科学家使用了原子力显微镜来显示矩形DNA一侧的聚合图案（这是最近由Paul Rothemund发明的构造纳米尺度物体的方法）。

The figure of silicon tips etched in this novel etching solution is rocket tips on right rectangular pyramid rather than unsymmetrical eight sided pyramid etched in other etching solution.

更为重要的是该腐蚀液腐蚀的硅尖异于常规的不对称八棱锥，而是一种半锥角很小的"火箭尖"形状，因此可望获得更好的扫描特性和隧道效应。

This type of face is asymmetrical that will look good in big, small, oval, round, rectangular or rimless types of eyewear.

这种类型的脸具有不对称性，无论戴大的，小的，椭圆形，圆形，长方形或无框眼镜看起来都很好。

Moreover, it gave the computing formula on strain data processing of rectangular rosette An example that used the formula to

最后给出了利用此计算公式，对某一型号的应变测试数据进行了处理的实例，具有较强的实用性。

The combinations of 0.018 inch stainless steel round wire and all brackets produced significantly the lowest static and dynamic frictional resistance than that of other archwires . The 0.019× 0.025 inch stainless steel rectangular wire produced the highest static and dynamic frictional resistance combined with all preadjusted brackets combinations .

在4种弓丝中，0.019× 0.025英寸不锈钢方丝动、静摩擦力最大，0.018英寸不锈钢圆丝的动、静摩擦力最小，两者之间有显著性差异；0.020英寸不锈钢圆丝与0.019×0.025英寸不锈钢方丝之间无显著差异。

Chimborazo and Cotopaxi, took me by the hand.

越过琴博腊索山和科托帕克西山。

This car is in a good condition.

这辆车的状况很好。