对比率

After analyzing and processing the grating reticle image collected by CCD, the mapping coefficient can be accurately calculated from grid size to pixels. Comparing the fore-and-aft two grating reticle images after the worktable moved. Adopting phase difference ratio arithmetic based on Lissajous figures,the phase difference of two images will be figured out. The displacement of the worktable can be further calculated by the mapping coefficient.

调整光路使CCD获取清晰的光栅图像，对图像进行分析处理，计算出栅距与像素之间的映射关系，再对工作台移动前后的光栅图像进行对比，采用基于李萨如图的相位差比率算法获取它们的像素位置差，从而计算出工作台的实际运行位移。

According to statistics, from 2000 to 2007, investment of Hangzhou, the average contribution to the economic growth rate in more than 40% of government investment in total fixed asset investment in boosting the ratio of 1:3.8 Tatsu.

据统计，2000年至2007年，投资对杭州市经济增长的平均贡献率在40%以上，政府投资对全社会固定资产投资的拉动比率达1：3.8。

The results showed that 1 there were no significant differences in the rates of cytoplast protrusion and enucleation between oocytes that were incubated in colchicine (0.4 μg/mL) for 0.5 h and oocytes that were incubated in colchicine (0.4 μg/mL) for 1 h, and the rate of cytoplast protusion can be 85.4% while the rate of cytoplast enucleation is 100%. 2 There was no significant difference in oocyte enucleation between oocytes treated with medium containing 0.2 μg/mL colchicine for 0.5 h and oocytes treated with medium containing 0.4 μg/mL colchicine for 0.5 h. 3 A maturation time of 18–23 h did not affect the rates of cytoplast protusion and enucleation by chemically assisted enucleation, whereas the rate of enucleation of oocytes by blind enucleation was found to decrease with a prolonged incubation time. 4 The development rates of reconstructed embryos could not be influenced by these two enucleation methods, increased from oocytes matured for 21–23 h.

结果表明： 1 卵母细胞在0.4 mg/mL的秋水仙素溶液中分别孵育0.5 h和1 h，胞质突起率和去核率没有显著的差异，突起率可高达85.4%，去核率达到100%； 2 0.2 mg/mL或0.4 mg/mL秋水仙素溶液将卵母细胞处理0.5 h，对去核效果没有显著影响； 3 对于体外成熟18~23 h的卵母细胞，随着成熟时间的延长，盲吸法的去核率降低，但没有影响秋水仙素诱导胞质突起的比率和去核率； 4 两种去核方法对重构胚的发育没有产生显著影响，但成熟21~23 h卵母细胞重构胚囊胚的发育率显著高于成熟18~20 h卵母细胞重构胚囊胚的发育率。

We explicitly derive a domain of attraction for the positive equilibrium of system by using Liapunov method. We also investigate Hopf bifurcation by using Hassard method. Finally, some numerical simulations are made for system.Our paper are separated into seven chapters.

本文对一类具时滞和比率依赖的HollingⅢ型捕食-食饵系统进行了研究，利用Liapunov方法精确估计了正平衡点的吸引域，并利用Hassard方法研究了系统的Hopf分支，最后本文对一个具体模型进行了数值模拟。

Our study leads to the following findings: First, if we take short-term debt into consideration and eliminate the IPO effect, the equity financing preference no longer exists: second, financial deficits play a more important role than traditional firm characteristics in debt ratio adjustment process, which implies that the pecking order theory can account for corporate financing behaviors to some extent: third, equity market conditions and government regulatory policies have some effect on the composition of firm external finance.

基于对中国上市公司股本融资偏好问题的重新审视，我们发现：如果将短期债务考虑在内并剔除首次公开募股的影响，股本融资偏好就不复存在；(2)在企业债务比率的调整过程中，融资缺口所起的作用超过了传统的企业特征因素，这意味着顺序偏好理论能在一定程度上解释企业的融资行为；(3)股票市场状况和政府管制政策会对企业外部融资的构成产生一定的影响。

Can accelerate the bone marrow cell from G1 phase into S phase when we measure it's Cell cycle, it make S phase rate was increased .thus it promoted DNA synthesize and repaired. Mice irradiated at dose of 5.5 Gy gamma-irradiation showed timed-related decreases and restores in peripheral blood picture at day 1 through day 21, the counts of WBC of these group had taken drug has various degree to increase than irradiation control group in day 1. Grugs failed to protected the peripheral blood cell at lowest point, but seems promote their rescovery.9803 treated group was distinct. At 7days after mice were radiated in 3.5 Gy. we observed drug can Significantly hold back the decreased number of hematopoietic progenitors colony forming radiation induced. These findings indicated 9803 have a certain radioprotective activity against gammer irradiation in mice.

给药组的 CFU-S 数量较照射对照组明显增加，3.5Gy 照后第七天观察给药9803组对小鼠骨髓造血组细胞集落生成能力的影响，给药组的造血祖细胞集落的形成能力强于照射对照组，并且9803组明显优于523组。5.5Gy 照射引起的小鼠的外周血细胞数量的降低以 WBC 发生最早，照后24小时给药组的 WBC 数量均比照射对照组有不同程度的升高，以9803各给药组最为明显，药物未能使照射引起的外周血细胞最低值升高，而有降低的趋势，但给药对照射后期外周血象的总体恢复有较好的促进作用。7.5Gy 照射后第七天测定小鼠骨髓细胞周期的测定中发现9803具有促进骨髓细胞由 G1期进入 S 期的效应，致使 G0/G1期细胞显著减少， S 期细胞比率显著增加，这利于促进 DNA 合成修复，即促进骨髓细胞增殖，骨髓细胞 DNA 含量给药组显著高于照射对照组。

Based on a questionnaire of drivers' psychological and behavioral reaction under emergency, this paper improved the Gipps car-following model and proposed a new emergency evacuation car-following model based on the minimum safety distance. The model contains statistical distribution of drivers' behavioral differentia and experiential estimate.

本研究通过对突发事件情况下驾驶员心理与行为特性问卷调查，得到驾驶员在非常态交通环境下的行为差异和经验判断比率分布，对Gipps跟驰模型进行了改进，提出了基于最小安全跟车间距的应急疏散车辆跟驰模型。

In this paper, the research of discrimination of the excitation inrush current is ana...

论文对变压器励磁涌流的鉴别方案进行了分析，通过对互感器饱和状态的仿真，详细研究了四折线的比率制动的变压器保护方案。

The article mainly analyzes how innovation affects the social welfare and makes some conclusions as follows: firstly, influences on the price and output of products of innovation by oneself are uncertain, but innovation can enhance social welfare when it reduces the product price or raises the price but diminishes the elasticity of inverse demand curve.

本文重点分析了企业创新对社会福利的影响，得出的主要结论如下：（1）独立创新对产品价格和产量的影响是不确定的，但当创新使产品价格下降或者创新使产品价格上升且使反需求曲线的弹性变小时，独立创新能够增加社会福利；（2）联合创新能够降低每个企业的成本，增加企业的研发开支、产量和利润，因而联合创新有利于社会福利；（3）在考虑了创新的溢出效应后，存在一个外溢比率的帕累托最优区间，但我们必须在创新激励与社会福利之间做出权衡。

The half-seed method system of Agrobacterium-mediated soybean transformation was researched applying healthy explants rates, resistant tufty shoots and elongated shoots as targets. Explants of soybean grow well in environments with abundant light and oxygen in cocultivation.

以农杆菌介导的半种法大豆遗传转化系统为基础，对目的基因进行转化；以健康外植体获得率、抗性丛生芽获得率和抗性芽伸长比率为指标，对转化系统条件进行优化。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。