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- Positive frequencies are produced by anticlockwise rotation and negative frequencies by clockwise rotation. 正频率是用逆时针旋转来产生，而负频率是用顺时针旋转来产生。
- The positive frequency of methylation of P16 gene promoter in HPP-CFC of normal contrasts was higher than that of psoriatic patients. 正常对照骨髓HPP-CFC P16基因启动子甲基化阳性率较高,而银屑病患者骨髓HPP-CFC P16基因启动子甲基化阳性率低于正常人。
- In 15 normal serum samples,the false positive frequency of HPV DNA was 0/15(0%)and 1/15(6.67%)by using DDH and PCR methods respectively. 1 5例正常人血清中 ,以DDH方法检测 ,HPV感染的假阳性率为 0%25 ;
- There is positive proof that he did it. 有确切的证据证明他做了此事。
- The positive frequencies of RF, APF, AKA and anti-CCP were higher in AFA-positive than in negative ones. AFA was significantly correlated to APF, anti-CCP, AKA while no obvious correlation was found between AFA and RF(P=0.049,near to 0.05). RF、APF、AKA 及抗CCP 抗体在AFA 阳性组的阳性率大于阴性组;AFA 与其它自身抗体尤其抗CCP 、APF、AKA 显著相关;与RF 相关性最差P=0.;049。
- Results:The serum HBV infection markers in all cases were positive.The positive frequency of HBV antigen of glomeruli was 90.0%.The HBV-DNA on glomeruli were all positive in 4 cases. 结果:全部病例血清HBV标志物阳性，肾组织HBV抗原阳性率达90.;9%25，4例肾组织HBV-DNA均阳性。
- Her behaviour was a positive outrage. 她的行为残暴到了极点。
- I'm positive she told us to meet at noon. 我肯定她是告诉我们在中午见面。
- Effectof polarized current, frequency, noise in oscillographic signal and decom position frequency on results ofw avelet transform w as investigated. 探讨了极化电流大小、频率和示波信号中噪音、分解次数等因素对小波变换结果的影响。
- This charge is a positive charge. 这个电荷是正电荷。
- She shows a very positive attitude to her work. 她工作态度非常积极。
- Can you be positive about what you hear? 你对听到的话有把握吗？
- He has a positive attitude towards life. 他对生活持有积极的态度。
- The number of positive numbers is infinite. 正数的数目是无穷的。
- Are you positive that you saw him? 你肯定你看到他吗?
- He was positive that he had seen it in the newspaper. 他肯定他已在报纸上看见过。
- There have been positive developments in international relations. 国际关系已逐步改善。
- positive frequence 正频率
- She was quite positive about the amount of money involved. 她对所涉及的钱数十分肯定。
- The positive or negative character of a proposition. 命题的性质命题的肯定或否定的性质
