第一象限

The unsaturated and compacted soil triaxial test result under constant suction describes the unsaturated soil critical state surface in p-q-s three dimensional space: in p - q plane, the slope M of critical state line is independent of suction; the cross line of LC yield surface and critical state surface is a curve with extremum in three dimensional stress space, and its projection in p-s plane is located in quadrant 1 in triaxial compression state; its projection in q-s plane has asymptote, and there should also be asymptote in respect of the curve that stands for the function relationship between cohesive and suction.

基于局部变形测量的常吸力非饱和压实土三轴剪切试验结果，全面描述了非饱和土p—g—s三维应力空间中临界状态面的合理形态：在p—q平面，临界状态线斜率M是与吸力无关的物理量；临界状态面与LC屈服面交线在三维应力空间中是一条存在极值的曲线；该交线在p—s平面的投影曲线在三轴压缩应力状态下应位于第一象限；该交线在q—s平面的投影曲线应存在渐近线；反映凝聚力与吸力关系的函数曲线也应存在渐近线。

It is proved that there is no limit cycle around the positive equilibra by constructing Dulac function, thus global asymptotic stability of the positive equilibria is proved in the first quadrant.

分析了该系统的平衡点性态，利用Dulac函数证明了系统在正平衡点外围不存在极限环，从而证明了正平衡点在第一象限内是全局渐近稳定的。

A predator model with refuge and toxicity is studied. By constructing a suitable Dulac function, it is shown that there is no limit cycle in the first quadrant, thus the globally stability of the equilibrium is proved. Further more, the paper analyzes the influence of refuge, toxicity and harvesting. It is amazing that ① if the death rate of predator is big or the harvesting effort is big, the existence of the predator is unrelated with refuge; if the death rate of predator and the harvesting effort are small, and the refuge is small enough, the population of both species is increased as the increase of refuge;② if d2=0, the increase of d1 has no influence on the prey population, while the population of predator is decreased.

研究一类有避难所、毒素作用和外界捕获影响的捕食系统，通过构造恰当的Dulac函数，证明系统在第一象限没有极限环，从而证明了平衡点的全局稳定性；分析了避难所、毒素、捕获作用对该系统最终种群数量的影响，发现：①当捕食者的死亡率大或其被捕获得多时，两种群的绝灭与避难所的存在无关；当捕食者的死亡率小、被捕获得多且避难所足够小时，随着食饵避难所的增加，捕食者种群数量也随之增加；②当毒素d2=0时，毒素d1的增加对食饵种群最终数量没有影响，而使捕食者种群数量下降。

Consider the actual meaning of the system, we are mainly interested in the dynamical behaviour of the system in the first quadrant.

根据问题的实际意义，我们主要感兴趣的是系统在第一象限内的动力学行为。

When I first meet a new person, the size of the opening of this first quadrant is not very large, since there has been little time to exchange information.

当我第一次遇到一个人的时候，这个公开的第一象限面积并不太大，因为交流信息的时间不多。

We look at the matrix map, the horizontal axis for market share, vertical axis is satisfied, we can see a lot of blue in the high point of market share range, is in the first quadrant and the fourth quadrant, only the domestic air-conditioning and refrigerator Brand is a high degree of satisfaction with the first Matrix, a general view that our domestic brands can be said to occupy a cost-effective in the low-end market, but in terms of satisfaction to be improved.

我们看一下矩阵图，横轴为市场份额，纵轴是满意度，可以看到大量蓝点分布在高的市场份额区间，就是在第一象限和第四象限，仅有空调和冰箱的国产品牌是属于满意度较高的第一矩阵，所以总体来看说明我们的国产品牌，可以说性价比占据了中低端市场，但是满意度方面还是亟待提高。

An advance towards rule uses the least deviation interpolation to realize the anti-clockwise arc processing in the first quadrant is introduced in detail.

详细介绍了利用"最小偏差插补法"实现第一象限逆向圆弧加工的进给规则，推导出其他各象限顺、逆向圆弧的插补计算公式。

According as different projection of point of fall for Rocket in XOZ quadrant, the correction points are searched with the method along OX axle for errors point of fall, first correction point is searched in first quadrant, second t correction point is searched in second quadrant, third t correction point is searched in third quadrant and so on.

该方法以炮弹落点在XOZ象限投影的不同，沿落点偏差轴OX 寻找推冲点：第一象限一次可寻找到第一修正点，第二象限则应寻找第二点，以至第三点。

And the scores of the inner annulusand the first quadrant swimming time the rat fetuses got in Morris water maze test were analyzed with spss 11.0Results: There was significant differences in the scores of the inner annulus(0.1193±0.0810) and the first quadrant swimming time(0.5233± 0.1375 )that got in Morris water maze between the 30 min group and the

统计各组在第一象限的游泳时间及在内环的得分。所得分数用统计软件spss 11.0进行评价。结果超声辐照30min组，成年期大鼠在Morris水迷宫测试中第1象限游泳时间(0.5233±0.1375)及内环所得分数(0.1193±0.0810)与对照

In other words, the service sector can be considered aschanging form from allocation of income in Department Ⅲ to productionof means of subsistence in Department Ⅱ.

也就是说，服务部门可以理解为由第三象限的收入分配领域向第二象限的消费资料生产部门的转变，一部分的服务部门可被看作是转变到第一象限的生产投入部门。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。