查询词典 keeping

It deals with the invention and development of time-keeping apparatus in our country during a historical period of some three thousand years, tracing this development from remote antiquity with its sundial and clepsydra making use of the shadow of the sun down to the Dynasties of Han, Sui, Tang and Sung with their water-powered astronomical clockworks...

自远古利用日影的圭表和日晷起，中间经汉、隋、唐、宋等朝代，附装在水力天文仪器上的水力天文钟，都采用了齿轮和凸轮的传动，即已都属于机械性。元代郭守敬以后，到明初的詹希元，更发展到独立时钟机构，並有了指针和表盘。可是近四百年，即自明代万历年间，西洋的自鸣钟传来我国，我国在计时器方面的工作，始终在模制阶段，自己的发明遂归于停顿。那次会议闭幕以后，会中曾用英文出版一次，我国1956年12月，《天文学报》4卷2期用中文出版一次。现在根据一些新资料，重新加以增删和改正。

As a whole, climate of these two lakes have been keeping pace with the global climatic changes.

总体上，两个湖泊区域气候的变迁与全球性气候变化保持同步。

And we are also keeping close watch on the situation in South Dakota as it develops.

我们也持续关注南达克达州的发展。

This paper adopted a course keeping nonlinear robust controller based on closed-loop gain shaping algorithm and exact feedback linearization algorithm and a speed robust controller which was based on closed-loop gain shaping algorithm.

该文采用基于闭环增益成形算法和精确反馈线性化算法的航向保持非线性鲁棒控制器与基于闭环增益成形算法的速度鲁棒控制器。

For a nonlinear course keeping system for ships, a kind of nonlinear robust PID is presented, which is based on an exact feedback linearization and a closed-loop gain shaping algorithm. The nonlinear PID controller is constituted of a nonlinear items with a robust PID controller.

针对非线性船舶航向保持系统，给出一种基于精确反馈线性化和闭环增益成形算法的非线性鲁棒PID控制器，该非线性PID控制器由非线性函数项和鲁棒PID控制器组成。

Another nonlinear robust PID controller is wholly based on closed-loop gain shaping algorithm, which includes a nonlinear switching component with a timer. The algorithms improve the robustness of the system and simplify the design of controller, the simulation results show that the course-keeping performance is improved well.

另外，还给出一种完全基于闭环增益成形算法的非线性鲁棒PID控制器，其包含了具有定时功能的开关元件，两种非线性PID控制器在提高系统鲁棒性能的基础上，简化了控制器设计，从仿真结果可以看出，航向保持效果良好。

I have set my heart on keeping her in my own house, for I love her better even than my own wife Clytemnestra, whose peer she is alike in form and feature, in understanding and accomplishments.

放在家里；事实上，我喜欢她胜过克鲁泰奈斯特拉，我的妻子，因为无论是身段或体形，还是内秀或手工，她都毫不差逊。尽管如此，我仍愿割爱，如果此举对大家有利。我祈望军队得救，而不是它的毁灭。

Also, G2 and emApp are generally out-of-sync, you're just keeping users very coarsely in sync.

另外，G2和emApp一般都是非同步的，你只能保证较差质量的用户同步。

This paper researches linear maps preserving orthogonality,obtains the linear maps preserving othrogonality,it is either a rank -declining or rank -keeping map or a map with nilpotent element in its codomain.

利用分块成向量的方法证明了MnMn(F为域F上所有n×n矩阵构成的乘法半群上的n×n拟正交矩阵组至多含有n个矩阵，利用方程组的解的理论证明了Mn中与给定矩阵A构成两两拟正交矩阵组的矩阵个数不超过n-Rank+1，从而得到Mn上保持拟正交性的线性映射φ要么是降秩的或者保秩的映射，要么φ的值域中含有幂零元。

In the one half part, according to the strontium nature, thermodynamic calculation of correlative reaction and the principle of the vacuum aluminothermy reduction process, with the laboratory findings of preparation strontium by vacuum aluminothermy reduction compared and analyzed in different parameter conditions, a variety of factors which effect the decomposition rate of SrCO_3 and the percent reduction of strontia are gotten out. The factors include that the decomposition rate of SrCO_3 is influenced by different addition and pressure. They also include that the percent reduction of strontia is influenced by excess coefficient of reducing agent aluminium powder, the particle size of raw material or reducing agent, the pressure of barbecuing, temperature and reduction time. According to those, we can draw the conclusion as follows:(1) Decomposition temperature of SrCO_3 is decreased by adding carbon and alumina in different degree.(2) With quantitative carbon added under the vacuum condition, the decomposition temperature of SrCO_3 is decreased obviously, which can fall 150℃ compared with atmospheric pressure.(3) In keeping 1150℃ of 2.5h, under the 5Pa vacuum condition, the decomposition rate of SrCO_3 nearly keeps in 99% steadily.

在前半部分的真空铝热还原法中，根据锶的性质、相关反应的热力学计算及真空铝热还原法原理，通过对不同参数条件下的真空铝热还原法生产金属锶的实验结果的分析比较，得出了影响SrCO_3的分解率和氧化锶的还原率的种种因素，具体因素包括不同添加剂、不同气压对SrCO_3分解率的影响，还原剂铝粉的过量系数、原料与还原剂的粒度、制团压力、温度和还原时间等对氧化锶还原率的影响，得出具体结论如下：(1)添加碳和Al_2O_3能不同程度的降低SrCO_3的分解温度；(2)真空条件下加入一定量的碳可显著降低SrCO_3的分解温度，比之常压下可降低150℃之多；(3)在1150℃恒温2.5h、真空度达到5Pa的条件下，SrCO_3的分解率几乎保持稳定在99％；(4)氧化锶的还原率随还原剂过量系数的增大而增大，但是趋势越来越小，当过量系数超过25％后，氧化锶的还原率几乎不再增加；(5)氧化锶的还原率随原料与还原剂的粒度的变细而增加；(6)氧化锶的还原率随制团压力的增加而增加，但超过一定值后，氧化锶的还原率反而会下降；(7)氧化锶的还原率随还原温度的升高而增加；(8)氧化锶的还原率随还原时间延长而增加，在本实验条件下，超过2.5h趋于稳定。

Pradeep Indulkar, a senior official at the Maharashtra state Home Ministry say 101 human were killed and 287 injured.

马哈拉施特拉邦内政部高级官员Pradeep Indulkar称，有101人在冲突中丧生，287人受伤。

Mark Frei, a senior vice president of West, says 80% of West's homeagents have some college education, compared with 30% of those whowork in office-based call centers.

Frei说，该公司80%在家办公的人员都拥有本科学位，而在公司电话中心工作的人中只有30%拥有本科学位。