压下

Prehypertensive subjects versus normotensive subjects had significantly higher body mass index and subscapular skinfold, systolic and diastolic blood pressures, and triglycerides beginning in childhood; higher glucose in adolescence; and higher low-density lipoprotein cholesterol, fasting insulin, and insulin resistance index in adulthood. Hypertensive subjects versus normotensive subjects had higher adiposity measures, SBP and DBP, glucose, and triglycerides beginning in childhood; higher insulin and insulin resistant index in childhood and adulthood; and lower high-density lipoprotein, cholesterol in adulthood.

与正常血压者相比，高血压前期者其幼年期基础体重指数、肩胛下皮肤皱褶厚度、收缩压和舒张压、甘油三脂等指标更高；在青春期血糖水平更高；在成年期低密度脂蛋白胆固醇、空腹胰岛素、胰岛素抵抗指数更高；与正常血压者相比，高血压者在幼年时基础水平的肥胖积分、SBP 和DBP、血糖、甘油三脂等更高；在幼年期和成年期胰岛素和胰岛素抵抗指数水平均更高；在成年期高密度脂蛋白胆固醇水平更低。

This paper presents the main results of the research on the transition process of the diversion system at the Hongjiadu hydropower station in the presence or absence of the tailwater surge chamber.

对洪家渡水电站引水系统在设置尾水调压室和取消尾水调压室两种情况下的过渡过程进行了计算研究。

In order to optimize the technology of press and lower the production cost,a two-stage floating elastic pressing structure at the anvil swage of the second punching die was adopted.

为优化冲压工艺，降低生产成本，第2副冲模采用了下模部分二级浮动弹压的结构，成功实现局部胀拉和翻边工艺以及压凸、弯曲、整形多道工序一次成形。

A Hamiltonian system was constructed for the fundamental problem of the dynamic buckling ,thereby problems of critical loads and buckling modes were reduced to determinations of eigenvalues and eigensolutions in a symplectic space and a symplectic method was proposed.

针对有内压或外压的弹性圆柱壳在轴向冲击载荷耦合作用下的动态屈曲问题，构造哈密顿体系，在辛空间中将临界载荷和动态屈曲模态归结为辛本征值和本征解问题，从而形成一种辛方法。

The experiment was investigated on the exit flow fields of compressor cascades with normal straight, positive leaned, positive curved, negative curved, and S type curved blades with tailboard at zero incidence.

进行了带尾板的由常规直叶片、正倾斜叶片、正弯曲叶片、反弯曲叶片、S形叶片组成的 5种矩型压气机叶栅在低速风洞上的实验研究，测量了叶栅出口流场，分析了零冲角下不同叶片弯曲形式对叶栅出口总压损失分布情况和主流速度的影响。

The results indicate that the tailrace tunnel has a good effect on air cooling and dehumidification in summer, and that the parameters of outlet air in the tailrace tunnel are mainly influenced by the temperature of tail water rather than by the parameters of outdoor air and the terminal air parame...

测试结果表明，夏季运行时无压尾水洞对引入空气有良好的降温除湿效果；在无压尾水洞足够长的条件下，尾水洞末端引风参数主要受尾水温度的影响，而受室外空气参数的影响很小，尾水洞出口空气接近对应尾水温度的饱和状态。

The suitable buried depths of tensiometers used for drip irrigation scheduling of tomato should be determined based on the buried depth of drip tape. The experiments recommended that one tensiometer should be installed just below a drip tape at depth of 30, 50 and 70 cm for the lateral depth of 0, 15 and 30 cm, respectively.

建议采用负压计制定灌溉计划时在毛管所在垂直剖面上安装1支即可，该研究条件下，毛管埋深0、15和30 cm时，用于制定灌溉计划的负压计宜分别埋置在毛管所在剖面上30、50和70 cm深度。

The results of appraisingwith the water parameters showed that all clones had the abilities toincrease osmotic adjustment and turgor maintain during water stress.

根据6项水分参数对无性系渗透调节和维持膨压能力综合评价结果表明，在水分胁迫条件下，各无性系均有一定的提高渗透调节和维持膨压的能力。

Positive tensile stress on iron undersurface relaxes to the inner of iron and negative tensile stress on iron undersurface concentrates on the side of iron as the temperature declining, so cracks easily appear at the site where positive and negative tensile stress cross.

在冷却过程中，铸铁下表面的拉应力逐渐向铸铁内部释放；同时，压应力逐渐向铸铁的两侧端面集中。因此在拉应力和压应力的交界处，容易产生裂纹。

Critical voltage for a simply supported rectangular thin plate under uniform electric field is presented by using Navier solutions.

基于经典板理论，假设材料的电弹参数为板厚方向坐标的幂函数，采用含压电耦合项的修正层合理论，推导了压电功能梯度薄板在电载荷作用下的屈曲方程，并利用Navier解，得到四边简支矩形薄板在均匀电场下的屈曲临界电压。

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。