positive frequency

The logistic multiple stepwise regression analysis showed that the history of the positive developmental delay, language delay and the frequency of the speech therapy were related to the therapy effect.

Logistic多元回归分析表明发育迟缓、语言迟缓和治疗频度与疗效有关。

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There also exists a pronounced positive correlation to the first date of concentrated rainstorm period in Guangdong Province in April-June after 1986, but a negative correlation to the frequency of concentrated rainstorm period before 1977;

与广东降水集中期初日只有在1986年以后至今才具有显著的正相关，而与降水集中期次数却在1977年之前就具有显著的负相关；

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It put forward the design methods of oscillator based on the RF transistor which work at the characteristic frequency. It design preamplifier based on the principle of positive feedback. It is possible to set alarm automatically by micro-controller and other chips.

文章根据多普勒效应设计微波探测器，提出了基于射频三极管在特征频率下的应用设计振荡器的方法，设计了基于正反馈原理的前置放大器，利用单片机及其它外围芯片可实现自动拨号报警。

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The frequency and intensity of positive signal were decreasing from decidual cells to endothelial cells.

阳性信号出现频率及强度均以母面蜕膜细胞最高，滋养层细胞层次之，间质细胞层再次之，血管内皮细胞最低。

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Amplitudes of late positive component ( LPC) were larger for low than for high frequency words;

低频词比高频词有更大的ERP晚正成分（LPC）；

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