查询词典 decrease in population

Further increasing the Mo content results in the remarkable decrease of acrolein selectivity.

Mo含量进一步增加，催化剂的丙烯选择性增加而丙烯醛选择性下降。

Following up those acromegalic patients after adenoectomy for 3 to 6 months, the serum levels of IGFBP-3 significantly decrease, but are still higher than the levels in normal adults.

肢端肥大症患者手术切除肿瘤3-6月复查时，病情仍然活动的患者的血清IGFBP-3水平尽管较手术前明显降低，但仍高于正常成人的水平（P.05）。

Objective To determine the action spectrum of ultraviolet in chronic actinic dermatitis and further analyze the influence of course of disease and period in the sunlight everyday on the decrease of minimal erythema dose respectively.

目的 测定慢性光化性皮炎的紫外线作用光谱并进一步分析患者病程及日均户外曝光时间对作用光谱最小红斑量降低的影响。

The results indicated that soil bacterial number decreased significantly (P.01), and soil fungi number also decreased (P.05), but not as significant as the decrease of bacterial number. The amount of soil actinomycosis decreased (P.05) under elevated CO2 in the non-rhizosphere soil of P.

结果表明：高浓度CO2（700μmolmol^(-1)和500μmolmol^(-1)）处理对长白赤松和红松幼苗非根际土壤细菌数量具有显著的(p.01)抑制作用，对真菌数量亦有抑制作用。

Pole-placement and Inner model tuning methods are discussed finally;(2) For the linear derivative action, several different tracker-differentiators are presented to improve the quality of the derivative signals;(3) A neural network tuning method is given for the nonlinear PID controller which includes the above tracker-differentiator;(4) For the linear integral action, a nonlinear pre-phase integrator is studied in order to decrease the phase delay problem; Simulation results show that the nonlinear PID controller including the pre-phase integrator posseses better performance in both fast and stable property, and strong ability of anti-disturbance;(5) A simple optimal criteria is introduced to optimize the parameters of the nonlinear PID controller based on the pre-phase integrator.

仿真研究表明，由此形成的非线性复合积分PID控制系统，具有快速而平稳的过渡过程和超强的干扰抑制能力；(5)采用物理意义简单明确的目标函数的优化设计方法，对上述非线性PID控制器进行参数整定，达到了满意控制典型工业过程的目的。通过对直线电机伺服系统的仿真研究，表明该种非线性控制器具有同时跟踪多个目标的优越性能。

Moreover, the development of course of disease and prolongation of period in the sunlight will further result in the decrease of MED of action spectrum.

且CAD患者病程的发展和户外曝光时间的延长会导致作用光谱MED进一步降低。

This model was finely fitted by theexperimental results and was used to calculate the activation area,which was 0.127 〓/mol with little dependence of subphasetemperature. The positive activation area indicate that there is anincrease in area when the activated complex is formed, increasingthe surface pressure should decrease the rate constant and that theactivated complex is unimolecular in nature.

在一系列实验曲线的基础上，我们提出测量的面积变化应该由聚合中分子结构变化引起的急剧的瞬时面积变化与随后的与此面积变化相反的弛豫过程两部分组成，并据此提出一种反应动力学模型，此模型与实验结果相当吻合，此模型用于处理聚合速率的紫外光强依赖性，得到聚合速率常数近似与光强成二次幂指数关系；此模型也被用于计算活化面积，发现活化面积为〓，几乎与温度无关。

The results indicate that the solubility of actomyosin, ATPase activities and -SH content of myofibrillar protein decrease as frozen storage progressed.

结果表明，在不同温度下冻藏时，鲫鱼肌动球蛋白的盐溶性、肌原纤维蛋白的 ATPase活性以及巯基含量随着冻藏时间的延长，均呈下降趋势。

The calorific values of fecal decrease with increasing temperature for fish fed ad libitum.

在饱食情况下，花尾胡椒鲷幼鱼粪便的能值随温度的升高而下降。

In the past when the business card printing and membership card production process meets the decrease in density, tend to business card printing and membership card making machine adding a concentration of printing inks.

过去每当在制卡和会员卡制作过程中遇上密度下降的情况，往往会为制卡和会员卡制作机添加较浓缩的印墨。

Chimborazo and Cotopaxi, took me by the hand.

越过琴博腊索山和科托帕克西山。

This car is in a good condition.

这辆车的状况很好。