查询词典 minimum density

An explicit analytical solution of the threshold pump power of the laser has been derived based on rate equations which contain the attenuation coefficients of the pump and laser radiations as well as the major contribution of the re-emission of the upper level atoms to the pump wave by using the analytical solutions. An analytical solution of the minimum fiber length required for the onset of the oscillation is presented. In addition, the analytical solutions describing the variations of the density of the pump radiation and upper laser level population along the fiber length have also been given.

从速率方程组出发，在不忽略光纤损耗系数和保留再发射项主导部分的近似条件下推导出了双包层光纤激光器阈值泵浦功率的显函数解析表达式，得到了光纤激光器产生振荡所需的最小光纤长度的显函数解析解；还给出了泵浦光子数密度和上能级粒子数密度沿光纤方向随光纤长度变化的显函数解析解。

Hypha and arbuscular colonization have same orders in the two breeds, fastigium occurred in summer and low occurred in late spring and early summer, spore peak produced in summer in the Rhizospere of Puerraria lobata. Spore density had positive correlation with abuscular colonization, the minimum value appears in the winter, and the maximum appears in the summer; consist with the growth prosperous of lobata.

菌丝与丛枝定殖率在两品种间变化规律基本一致，高峰期都出现在冬季，低峰期则出现在春末夏初，夏季为葛藤根区AM 真菌的产孢高峰期，孢子密度与丛枝定殖率呈正相关，最低值出现在冬季，最高值出现在夏季，与葛藤的生长旺季相一致。

Based on both the minimum effective pay thickness of single-deck and the maximum density of the oil being stored, the maximum installation height can be calculated.

单盘的最小安装高度应根据可能储存密度最小油品时的情况进行计算，最大安装高度则应根据单盘有效厚度最小、可能储存密度最大油品时的情况进行计算。

When the pulverized material has been properly sized, mixed with the additive in the amount determined by testing, laid and compacted to the required density, surfaced with a chip seal coat, thin hot mix overlay or other light surfacing, a long lasting, low cost pavement can be constructed with a minimum of new material.

只有当被压碎的材料已制成合适的大小，混合了经测试确定的适量添加剂，铺设并压紧至要求的密度，再用一层碎片封闭层、热混薄覆盖层或其它轻质的材料铺平表面，经时效处理后，方可达到以用量最少的新材料构筑出低成本路面的目标。

In the wind environment with and without dust, the flashover voltage of flat plate model, Uf, increases with the increment of the wind. This increase trend becomes slow when the wind increase to be 4.5m/s. Also, the influence of the charge of sand dust on Uf is small. In the condition of sand dust deposited on flat plate model, there is a minimum value of Uf with the increase of the density of the deposited sand dust. Besides, the flashover voltage of the dust is influenced by the moisture of the dust.

得到了风沙速度、风沙带电量、沙粒沉积量及沙粒含水量等因素对沿面放电的影响规律；在有风有沙和有风无沙时，平板模型沿面闪络电压Uf随风速的增大而增大，当风速达到4.5 m/s后增大趋势变缓；Uf受沙尘的电荷量影响较小；当干沙粒沉积在绝缘表面时，随着沉积密度的增加，Uf存在着极小值；同时，平板模型的闪络电压还与沉积沙粒的含水量有关。

Separation criteria based on minimum mutual information of time-domain blind deconvolution was obtained on the basis of probability density estimation.

在概率密度估计的基础上，得到时域盲解卷积的基于最小互信息的分离准则。

Extract information based on the instantaneous features : In the center is one of the instantaneous rate of the power spectral density of the maximum, is a center to the absolute value of the instantaneous rate of the standard deviation, Non-zero weak signal instantaneous phase of the nonlinear component absolute standard deviation, Non-zero weak signal instantaneous phase of the nonlinear component standard deviation, In the center is one of the non-weak signal of the absolute value of the instantaneous frequency standard deviation, a signal to one of the instantaneous frequency of the power spectral density of the maximum, According to 16QAM and QPSK signals XI axis projection in the different performance parameters raised.

提取信号七个基于瞬时信息的特征：零中心归一化瞬时幅度功率谱密度的最大值，零中心归一化瞬时幅度绝对值的标准偏差，零中心非弱信号段瞬时相位非线性分量绝对值标准偏差，零中心非弱信号段瞬时相位非线性分量标准偏差，零中心归一化的非弱信号段瞬时频率绝对值的标准偏差，一个信号段的归一化瞬时频率功率谱密度的最大值，根据信号 QPSK 和16QAM在 XI 轴投影的不同表现，提出特征参数。

By analyzing and calculating work on the spectroscopic diagnostic results, the quantitative relationship between the electron density of laser induced plasma and linear heat input as well as the relationship between electron density and factor of absorption are deduced.

通过对激光等离子体光谱诊断结果的分析、计算，定量地得到了等离子体粒子密度与焊接线能量之间的函数关系以及粒子密度与吸收系数的函数关系。

Replacing complete concentrated feed with mixed concentrated feeds of dwarf elephant grass, brachiaria hybrid Ⅰ and brachiaria hybri Ⅱ, there was no significant effect on the growth and acetone body quality of young goose. The three acids glyceride and high density lipoprotein of serum from 80 day-old geese had no significant difference, but the total cholesterin and low density lipoprotein of geese fed with dwarf elephant grass, brachiaria hybrid Ⅰ and brachiaria hybri Ⅱ were all lower than that fed with concentrated feed to some extent.

用矮象草、臂型草杂种Ⅰ、臂型草杂种Ⅱ混合精料代替全精料养鹅并不会显著影响仔鹅的发育和酮体品质。80日龄鹅的血清TG和HDL差异不显著，但矮象草、臂型草杂种Ⅱ和臂型草杂种Ⅰ饲养的鹅，TC和LDL都一定程度上低于精料组的鹅。

The changes of population density of Rhizosphere bacteria, fungi and actinomyces, and the types and population density of nitrogen-fixing bacteria, phosphobacteria and potassium-bacteria in different types of soils were studied.

研究了不同肥力烟区根际细菌、真菌和根际放线菌的数量变化，以及固氮细菌、磷细菌和钾细菌的数量和种类的变化。

"The operators will suffer a temporary decrease in the number of consumers and short message services as people may not like having to provide their ID cards for a phone number," Xu Junqi, vice-dean with the Policy-Making Institute of the Telecommunications Research Centre under MII, said yesterday.

信息产业部下属的通信决策研究院副主任徐俊其昨天说：&实行手机实名制后，人们可能不太情愿用身份证注册手机号，所以通信运营商会暂时面临用户减少和短信用户减少的问题。&

I don't believe in make-believe!

我不相信这些虚构的故事。