平方

It is a Hong Kong monopoly capital enterprise with 600 trained workers.experienced experts of lockmaking technology.development ability andm ould manufacture,forging,die-casting mechanical processing.polishing and galvanization.

深圳市浩群五金厂位于深圳市宝安区松岗镇，厂房占地面积10000多平方企业拥有素质良好的员工600多名，有着熟悉制锁工艺和实践经验的技术工、抛光、镭射和电镀生产能力的港资企业。

It is shown that if the author ignores the usual contribution from the vacuum surrounding the system, then the statistical entropy consists of a quadratically divergent term which is proportional to the horizon area of the black hole and two logarithmically divergent terms, the structure of the whole expression is different from that of the black hole entropy.

结果表明，忽略远离围绕系统的真空的贡献，Dirac场的统计熵包含与黑洞视界面积成正比的平方反比发散项和对数发散项，整个表达式的结构与黑洞熵的结构不一样。

Thought to easily reach 82 plus feet in length, weighing in at 70 plus metric tons, with teeth measuring 18 plus centimeters in length and capable of exerting a bite force of 40,131 pounds plus per square inch — the Megalodon is easily recognized as the greatest predator of all time.

尽管它体长可以轻松达到82英尺多，重量在70公吨以上，牙齿的测量长度在18厘米以上，并且能够达到的咬合力为每平方英寸40131磅——Megalodon被轻松确认为在所有时代中的最强大肉食捕食者。

This reservoir is a mesotype shallow full-contained gas field, which is formed by 5 gas stacked formations in vertical. The buried depth is from 900m to 1200m, average porosity is 11.83%, average effective permeability is 0.28 X 10~-3 u m2. So this reservoir belongs to low permeability gas reservoir.

该气藏是由5个气层纵向叠置而成的浅层中型整装气藏，埋深900-1200m，平均孔隙度11.83%，平均有效渗透率为0.28×10~(-3)平方微米，属于低渗透砂岩气藏。

The adaptive compensation term of the optimal approximation error and a new robust term are adopted to minify the influence of modeling error and parameter estimation error.

该方案通过引入最优逼近误差的自适应补偿项和新的鲁棒项，削减建模误差和参数估计误差的影响，从而在稳定性分析中取消了要求逼近误差平方可积或逼近误差的上确界已知的条件。

The Bay of Bengal in the Indian Peninsula, South Peninsula, the Andaman and Nicobar Islands between the islands, with an area of 2,172,000 sq km, the depth of 4000 meters in 2000, the deeper southern part.

孟加拉湾在印度半岛、中南半岛、安达曼群岛和尼科巴群岛之间，面积为217.2万平方千米，深度在2000～4000米，南半部较深。

Tang Dynasty, Song will杨筠baguazhang and twelve Earthly Branches two positioning systems into one, and A, B, C, D, E, F, G, Sim, nonane, decane 10 days apart from expressing Nakamiya dry location E, F b dry, all joined the horizon orientation system for that position.

唐代，杨筠松将八卦和十二地支两大定位体系合而为一，并将甲、乙、丙、丁、戊、己、庚、辛、壬、癸十天干除了表示中宫位置的戊、己二干外，全部加入地平方位系统，用于表示方位。

There exits several MDO algorithms. But they are in our opinion either nonefficient or complicated. So we devised an algorithm called Subspace Approximation Optimization . In the SAO algorithm, the whole system is decomposed into one system-level optimization and several disciplinary optimizations so that a large and complicated problem can be divided into several easy-solving sub-problems. The coupling relationships and the coordination among disciplines are presented by equality constraints and these equality constraints are assigned to relevant disciplines. The optimums of design variables in system level optimization are transferred to discipline level optimization. The optimums of design variables in discipline level correspond to the point that is the nearest to the optimums of design variables in system level. If the optimums of design variables in system level are out of feasible region of discipline 1eve1, linear constraints can be built in the system level optimization using the design variable optimums obtained by the discipline level optimization. The system level optimization would improve the design of the whole system with these linear constraints.

目前，国内外已经发展出了多种飞机多学科设计优化算法，本文的重点是针对协同优化算法的不足，提出了子空间近似优化算法(Subspace ApproximatingOptimization，SAO)，SAO算法中，整个系统的优化问题被分解成一个系统级优化和若干学科级优化，而各个学科之间的耦合与权衡关系则被当作等式约束，这些等式约束将被分配到各个学科级优化中去，系统级优化的任务是寻找整个系统的最优解，而学科级优化的目标函数是以系统级优化分配下来的设计点为圆心的超球半径的平方，因此，如果系统级优化分配下来的设计点在学科级优化可行域内，则学科级优化目标函数为0，反之，则学科级优化的最优点是系统级优化当前设计点距离可行域最近的点。

Prove that if n is not a square then it has an even numble of divisors.

证明：若n不是完全平方数，则n有偶数个因数。

According to this research, the root mean square error could achieve ±1.156cm,±1.253cm and ±1.376cm by adopting hyperbolic mode, three times of the distance mode and distance square model. Its precision is good enough for engineering measurement. It provides not only the quicker methods to measure the orthometric height on survey engineer, but also a academic reference on regional geoid model

实验结果发现，经数学模式改正后双曲线模式、距离三次方模式及距离平方模式分别能达到±1.156cm、±1.253cm及±1.376cm合乎工程测量规范之标准，本研究在工程上不仅提供实务上快速测得正高的方法，於学术上亦可提供区域性大地起伏模型相关研究之参考。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。