By regression analysis, GM(1,1)model and other methods to determine the household income line of housing security, protection ratio and predict the demand(2009-2013) of affordable housing.
然后运用回归分析、GM（1，1）模型等方法确定住房保障家庭收入线、保障比例并预测出2009-2013年大连市经济适用住房的需求量。
ATP simulation and MATLAB calculation show that the voltage ratio protection against inter-turn fault of reactor can make correct judgement to this kind of fault quickly.
基于ATP的仿真和Matlab的运算表明基于电容器电感器电压比的电抗器匝间短路保护，能够对匝间故障做出快速而正确的判断。
But as we've just learned in this crisis, a low debt-to-equity ratio doesn't offer any protection against a bank making a bad loan.
可是，我们在这次危机中也认识到，即使较低的债权比(杠杆率)也不能有效地避免银行的不良贷款。
Based on the analysis of the differential protection of the double winding transformer, the paper presents a simplified ratio restraint algorithms for the three phase, three winding transformer.
在分析双绕组变压器的差动保护算法的基础上，提出了适用于三相三绕组变压器的比率制动式算法，并对判据进行了简化。
The transformation ratio of the original current transformer (CT) on the transformer HV side was so large that a parameter for the differential protection software exceeded its settable scope.
因变压器高压侧的电流互感器选择变比过大，以致超出差动保护软件的参数设置的范围。
The differential protection for power transformers features less ratio of proper actuation and slow response, because it severely suffers from false differential current caused by core saturation.
变压器的差动保护因受到铁芯饱和引起的虚假差流的影响，其正确动作率较低，动作速度也较慢。
Then we compared lung index number, the inhibition ratio of lung index number, death rate and the death protection rate, so as to evaluate the curative effect.
观察所有组别肺指数、肺指数抑制率、死亡率及死亡保护率，作为研究指标，以评估各组疗效。
The restrained characteristic of ratio differential protection is analyzed. The equal block angle for the ratio differential protection is calculated.
分析了比率制动式发电机纵差保护的制动特性，计算了不同比率制动特性的定值曲线对应的等效闭锁角。
The area ratio of protection forest and economic forest in forest land, thin stocked land and shrubbery land is about 34:1.
有林地、疏林地和灌木林地中防护林与经济林的面积比例约为34：1。
The results show that DSPP not only can completely protect double-link failures but also can make the tradeoffs between the resource utilization ratio, blocking ratio, and protection-switching time.
仿真表明，DSPP不仅能完全保护双链路失效，并且能在资源利用率、阻塞率和保护切换时间之间进行性能折衷。
The influence of CT turn ratio to high impedance differential protection is analyzed, and the method of measuring turn ratio error is also introduced.
分析了CT匝[数]比误差对高阻抗差动保护的影响，并介绍了匝[数]比误差的测量方法。
It analyzed the main factors such as the energy price ratio, energy consumption cost, energy selection, technical progress, income level, energy usage habit and environmental protection.
分析了能源比价关系、耗能成本、能源选择性、技术进步、收入水平和用能习惯、环保因素等影响我国居民生活用能的主要因素。
The flue gas processed by the FGD system can meet the national environmental protection standard, and the desulfurization ratio has reached 95% above.
经FGD系统处理后的烟气达到国家环保标准，其脱硫效率达到95%以上。
Therefore, reservoir protection has been the key factor for enhancing oil and gas production and recovery ratio.
保护油气层已成为提高油气产量和采收率的关键因素。
The cutting fluid has stable quality, safety, environmental protection, excellent processing and antirust performance and high performance-price ratio.
这种切削液品质稳定、安全、环保，加工、防锈性能优良，性价比高。
The cutting fluid has stable quality, safety, environmental protection, excellent processing and antirust performance and high performance-price ratio.
这种切削液品质稳定、安全、环保，加工、防锈性能优良，性价比高。
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