可变化

Studying the land use changes in the Loess Plateau can provide important information for decision-making of ecologic construction.

研究黄土高原的土地利用变化，可为其生态建设提供重要的决策依据。

Copepods showed responses to fish predation that depended on seasonal successional stage of the initial community, because of changes in their stage structure and edibility as they grew from nauplii to adults.

桡足类对鱼类捕食作出反应，依赖于起初群体的季节性的连续时期，由于它们的阶段性结构变化和可食性随着它们从幼体到成体的增长。

Results: By using SMI for 2 weeks, patientsleft ventricular ejective fractioncould be increased from 29.5±9.0 to 36.6±10.2 (P＜0.05), the heart function of 68.75%patients was improved, no side effects or toxicity was observed. Potassium magnesium aspartate could improve heart function in 37.50%patients only but with no effect on LVEF.

结果：应用参麦注射液2周后，左室射血分数由29.5±9.0升至36.6±10.2(P＜0.05)，68.75%的患者心功能改善，未发现明显毒副作用；门冬氨酸钾镁可使37.50%的患者心功能改善，但左室射血分数无明显变化。

Then the micro-state and transport process of carriers (hot-electron) in vivo of the switch material were studied in details using the quantum theory. It was found: in the DC bias electric field, under the certain condition of the relaxation time of the hot-electrons in the electron-electron and electron-phonon interaction process, the photoconductivity oscillation can be caused by the change of mobility in the process of optoelectronics transport, and the main causes that the output electrical pulse appears oscillation was revealed.

并从量子理论出发，研究开关体内载流子的微观状态和输运过程，在直流偏置电场作用下，体内热电子在电子—电子、电子—声子相互作用过程中，其驰豫时间及载流子寿命之间存在关系时，光电子的输运可通过迁移率变化引起光电导振荡，揭示出导致开关输出电脉冲出现振荡的根本原因。

First, the electroencephalograph,which is simply a device for recording the electrical activity of the brain by attaching electrodes to the scalp, shows that while there is a change in the pattern of activity during sleep, there is no evidence that the total amount of activity is any less.

全文可翻译为：首先，通过附着在头皮上的电极来记录大脑的活动电波的简单装置脑电图仪显示，在睡眠期间有活动状态的变化，没有证据显示在活动总量上有任何的减少

Taking Au-Ag intergrowth compounds as an example this paper has reached the following conclusions. In the Au-Ag compounds of differem types of gold deposits as sequemially replaces Au, making up a continuous isomorphous series. The content of Au and Ag in native gold forms a regular pattern. The development of native gold and that of electrum have something to do with different types of gold deposits respectively. Abundances of trace elements in Au-Ag minerals are controlled by geological settings and geochemical fields. The above study provides new geological information and a new method for the study and exploration of gold deposits.

本文以金银互化物的研究为例，讨论了在不同在因类型矿床中，金－银构成一个连续的类质同象系列，且变化是有规律可循，其微量元素的含量与该矿床成矿地质环境和相应的地球化学场有关，从而为找矿提供了新的地质信息，拓宽了寻找同类伴生元素矿床或发现新类型矿床的途径。

The model was used to predict air pollutant concentration along elevated road, and the caulated value coincides well with the meaaured data.

其模拟计算结果与实测数据相关性良好，证明该模式可根据车密度的变化预测高架道路的空气污染状况。

For this reason, the low-pass filtration is used to elide the wave less than eight days. Finally, a more reasonable day threshold is obtained to define temperature extremes.

但在日阈值的季节变化中包含系统性的天气扰动，因此需对其进行低通滤波，滤去8日以下的波动，最终可得到较为合理的检测极端温度事件的日阈值。

Based on a nonclassical theory of plasticity and the continuum damage mechanics,a damage constitutive equation is obtained for the ferrite phase with the damage evolution law for mixed hardening materials from an ellipsoidal void model under particular coordinates,where the void shape variation is considered.

基于非经典塑性理论和连续介质损伤力学，利用在一个特殊坐标系下基于椭球形孔洞模型得到的可考虑孔洞形状变化混合强化材料的损伤演化率得到了铁素体相的损伤本构方程，通过混合物理论利用铁素体和渗碳体相各自本构关系并考虑其几何特征得到了珠光体团的损伤本构模型。

The scattering by different shape and different media such as dielectric chiral or conduct circular cylider or elliptic cylinder are calculated and RCS curves are maped. The relation between the optimal polarization of the chiral elliptic cylinder and incident angle are maped. In accordance with the map, the information which is useful for radar target identification can be obtained.

对不同形状及参数的导体圆柱、椭圆柱，一般介质圆柱、椭圆柱，旋波媒质椭圆柱的散射特性进行了计算，给出了其RCS的变化曲线，并对极化散射矩阵进行了分析给出了旋波媒质椭柱最优极化的分布图，指出了其可提取用于目标识别的极化信息。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！