查询词典 PN

The content of Chl a, Chl b and carotinoid, net photosynthetic rate, stomatal conductance, Difference of CO_2 concentration pass in and out of the air chamber and candarboxylation efficiency in citrus leaves were maximized while intercellular CO_2 concentrations were minimized at 75% SWC.

综合分析Ci、Pn和Gs与红壤水分之间的关系，不同红壤水分条件所引起的柑橘叶片光合速率的变化，在红壤相对含水量低于30%时主要是由非气孔因素所引起的，而高于45%时主要是由气孔因素所引起的。

A PN based Channel Estimation algorithm using circular correlation is proposed, and is implemented in Single Carrier Frequency Domain Equalization system.

提出了一种基于伪噪声序列循环相关的信道估计算法，并将之应用于单载波频域均衡系统中。

This method estimates Doppler frequency by eliminating PN code two-phase modulation effect, then gains code phase estimation by circular correlation.

该方法利用伪码二相调制特性，通过乘法消除伪码影响，得到多普勒估计值，在此基础上运用圆周相关法得到的伪码相位估计值。

Vibration viscosity coefficient of fresh concrete with additives and mineral admixtures are tested.

在混凝土中掺入适量的NS、PN或SS可以降低新拌混凝土的振动粘度系数。

In part three, the absorption spectral behavior of binding reaction of cuprum- p-nitro-chlorophosphonazo Cu(Ⅱ-CPA-pN complex on bovine serum albumin was investigated.

第三部分：研究了蛋白质与Cu与对硝基偶氮氯膦的相互作用，发现蛋白质的加入能使配合物溶液的紫红色褪为紫色。

This algorithm can estimate carrier frequency, and rate of the PN code, eliminate the effect of noise using the second order cyclic stationary characteristic without a prior knowledge.

该算法在先验知识缺乏的情况下，充分利用直扩信号的二阶循环平稳特性，排除噪声干扰，对载频和码速率进行估计。

As a try of application of Yao's algorithm I used it in the Pn travel time inversion and found the spatial distribution of the diagonal element values of the resolution matrix obtained after 500 iterations.

分辨矩阵对角线元素的大小和射线的疏密呈正相关关系。

Research of Engineering Design Simulation Model and Application on Double Loop Speed Control System;2. The double loop series adjustable speed system is worth to use in pratice bec.

为了改善串级润达系统的性能指标，根据交流调速理论及自动控制的系统的原理，介绍了Pn控制的双闭环串级调速系统的组成、工作原理和操作步骤，简要分析了调速系统的动态性能。

Anthocyain-induced cholesterol efflux may be related to its enhancing PPAR-γ mRNA and protein expression.

花青素Cy-3-G和Pn-3-G促进胆固醇外流的作用与其增加PPAR-γ基因的表达有关。

Therefore,symmetric transformation can not be defined by metric conception in Euclidean space En.

在射影空间Pn中不存在度量概念，不能像欧氏空间En那样用度量概念来定义对称变换。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。