查询词典 difference frequency

Objective To evaluate the frequency of microdeletions in the long arm of Y chromosome of idiopathic infertile males with azoospermia and oligospermia in Xinjiang province in China and to investigate the difference of Y microdeletion frequencies between two nations.

目的评估新疆地区汉族、维吾尔族不明原因无精子症和严重少精子症男性患者Y染色体长臂微缺失的频率，探讨不同民族间Y染色体长臂微缺失发生率的差异。

The difference, relative variation of modular number and mass and their frequency distribution were analyzed between treatments, and within and among structural levels of genet, ramet and tiller in grazing experiment.

在放牧实验中，分别以矮嵩草源株、分株和分蘖层次为单位，对其构件单元的数量和生物量、变异系数、频率分布在处理间的差异和相对变异性进行分析；在模拟放牧实验中，分别就无性系内刈割和未刈割部分从这3个层次上比较了构件数量和生物量在处理间的差异和相对变异性，所得结果如下

In patient group, 40.74%(11/27) had DQB1 * 0503. The gene frequencies were 0.2302. In control group only 3. 75%(6/160) had DQB1 * 0503. The gene frequency was 0.0189. The differ- ence between the two groups was significant. After P value cor- rection, the difference was still significant.

在病人组中检出频率为40.74%（11/27），基因频率为0.2302，而对照组中DQB1*0503出现的频率只为3.75%（6/160），基因频率为0.0189，二组差别具有显著意义，校正P值后仍有显著意义。

In order to select optimal grid and good computation efficiency to recover the entire signal, aiming at the Ricker wavelet commonly used in forward modeling, we analyzed the alias and signal restoration problem in finite-difference method based on spatial sampling theorem and seismic wave traveling regulation in media with different velocity, to derive quantitative relationship among the modeling grid size, minimum velocity of model layer, and recovered main frequency of wavelet.

为了选择最佳的网格尺寸以及以最小的计算量完整地恢复出信号，针对地震波场正演模拟中经常使用的Ricker子波，根据空间采样定理和地震波在不同速度介质中的传播规律，分析了有限差分算法中的假频和信号恢复问题，推导出模拟网格尺寸、模型地层的最小速度和能够恢复的子波主频之间的近似定量关系，并用数值算例验证了这一关系。

The frequency of CMV seronegativity showed a stepwise decrease with the increase of donor age. In addition, the prevalence of HBsAg, antibodies to hepatitis C virus, antibodies to human immunodeficiency viruses type 1 and 2 (anti-HIV 1+2) and antibodies to human T-cell lymphotropic viruses type I and II (anti-HTLV 1/11) were compared between CMV seropositive and seronegative groups. Our results showed that there was no significant difference in seroprevalence of these markers between CMV seropositive and seronegative groups.

为了更进一步了解巨细胞病毒抗体和其它血液筛检项目之相关性，吾人在同批检体中比较巨细胞病毒抗体阳性者和阴性者其 B 型肝炎表面抗原、C型肝炎抗礼、第一型暨第二型人类免疫缺乏病毒抗体和第一型暨第二型人类嗜 T 淋巴球病毒抗体之阳性率，结果发现这些阳性率在两者间无有意义之差异。

There is no significantly difference of the frequency of genotypes among the CAD cases with different numbers of stenosed coronary artery.

CAD组T等位基因频率显著高于对照组(p＝0.004)。1、2、3支冠脉病变组间各基因型频率均无显著差别。

There were significant difference with the frequency and strongness of PCNA in breast benign disease and breast carcinoma.

在良性病变与癌组之间，PCNA阳性表达率及表达程度差异有显著性(P＜0.05)。

By this model, the target IF return of sum, difference and SLB/SLC antenna channel of the trilobe of frequency-phase scanning 3-D radar could be represented in one uniform expression accurately.

提出了一种三坐标雷达目标中频回波模型及其模拟方法，通过对和、差及辅助通道的目标三联波束回波统一建模，可以全面逼真地模拟频相扫三坐标雷达的目标回波。

The wavelet time-frequency features of the cracked rotor and the uncracked rotor were discussed, and the difference between them was presented.

将小波分析方法引入到裂纹转子时频特性研究中，得到了有无裂纹转子的小波时频特性，并讨论了它们的差别。

Results The vaccinal vestige, BCO immunization and familial traits were the risk factors of tuberculosis. Frequency of wildness, mutant heterozygote and homozygote of MBP-54 was difference in cases and controls.

MBP-54位点野生型、突变型杂合子、突变型纯合子3种基因型在病例组和对照组中的分布频率不同。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。