一定大小的

A set of complex Morlet wavelet are applied on projection slice of each direction to decompose each projection into several frequency channels,the average and variance extracted are computed in each frequency channel,and then linear regression model is employed to computer realationship feature between frequency channels.1-D DFT is applied to features and the amplitudes of Fourier coefficient are selected as features,then the extracted features are rotation invariant.

该算法是将一定大小的图像进行二维傅里叶变换；其次在变换后的图像中央选择一个圆盘区域，并在方向［0°，180°］内进行等间隔角度频率抽样，实现方向分解，使用一组复Morlet小波对每个方向上的映射切片进行小波变换，从而实现多通道频率分解；在各个频率通道中计算均值和方差作为特征，并利用线性回归模型计算频率通道之间的关系特征；将特征沿方向进行一维傅里叶变换并取其幅值，从而得到旋转不变性特征。

Results are illustrated in charts so that they can be used to assess the uniformity and unidirectivity of the MF inside the sample space with a certain dimension in a Helmholtz coil pair.

以图示的形式给出的结果可以用来评估亥姆霍兹线圈对内部一定大小的样品空间中磁场的同向性和均匀性。

The ascent rate decreases with time and the terminal velocity has an extreme value corresponding to bubbles with fixed diameter according to the experiment.

实验结果表明，水中气泡上升速度的大小都在随时间减小，气泡的末速度存在一极值，它与一定大小的气泡相对应。

The shuttle-shape and uplifted composite tissues in the middle of residual ear were cut ,and then insert into the vertical incision in the place which the tragus will be made .

根据残耳组织的形状，切取一定大小的梭形，中央略隆起的残耳复合组织，在拟再造的耳屏部位作纵向切口，将残耳复合组织插入切口内，缝合即可。

The shuttle-shape and uplifted composite tissues in the middle of residual ear were cut ,and then insert into the vertical incision in the place which the tragus will be made. ResultsAll the tragus reconstructed existence perfectly, none of them suffered from necrosis.

根据残耳组织的形状，切取一定大小的梭形、中央略隆起的残耳复合组织，在拟再造的耳屏部位作纵向切口，将残耳复合组织插入切口内，缝合即可。

The shuttle-shape and uplifted composite tissues in the middle of residual ear were cut ,and then insert into the vertical incision in the place which the tragus will be made. Results All the tragus reconstructed existence perfectly, none of them suffered from necrosis.

根据残耳组织的形状，切取一定大小的梭形、中央略隆起的残耳复合组织，在拟再造的耳屏部位作纵向切口，将残耳复合组织插入切口内，缝合即可。

It's usually fastened with clips and nails to a metal frame of certain size used for seats or beds; Compared with unstable elastics, it is tensile and flexible with high endurance; moreover, it largely increases the comfort of products. That's why it is widely used in furniture industry.

它一般用平钩和螺丝安装在一定大小的铁架上，作为整个座椅或者床的一部分；与其他产品相比，S簧具备更强的的伸张力、弹性和更久的疲劳性能，并且极大地增加了底座的舒适度，这就是为什么它会成为家具行业的首选配件的原因。

Evidence from common shore crabs and pied wagtails demonstrates that prey of a size which return the greatest energy reward per unit time are preferred over smaller and larger individuals.

真蟹和白脊令的证据表明捕食者优先选择能使其在单位时间内获得最大能量的一定大小的猎物，而不是比该体积更大或更小的猎物。

Evidence from common shore crabs and pied wagtails demonstrates that prey of a size which return the greatest energy reward per unit time are preferred over smaller and larger individuals.

真蟹和白脊令鸟的证据表明捕食者优先选择能使其在单位时间内获得最大能量的一定大小的猎物，而不是比该体积更大或更小的猎物。

Cryotherapy is a unique method based on Joule-Thomson effect which can be divided into two freezing forms: cryoextraction and destruction.

CO2冷冻是根据焦耳-汤姆逊原理，在冷冻探针的前段形成一定大小的冰球，可分为冻切和冻融两种冷冻方式。

The basic concept of FOP can be summarized as to further optimize effective prescription according to the standard of curative effects and with the aid of modern science and technology and theories of traditional Chinese medicine.

其基本内涵可概括为：以确有疗效的中药复方为研究对象，以现代科学技术和传统中医药理论为技术支持，以该复方所治病证的药效响应为评价标准，以优化重组疗效更优的新复方为研究目的。

Ever since our world has been a world, native forests have been indiscriminately exploited by man.

自从我们的世界一直是世界原生森林被任意剥削人。