对比率

In this paper, the bias of the ratio estimator and the estimateof mean square errors of this estimator with known numerator have been compared and discussed.

给出了分子已知情况下比率估计量的偏差和均方误差以及均方误差的估计，并对两类比率估计量进行了比较。

The quick ratio refers to the quick assets comparing with current liabilities.

速动比率是指速动资产对流动负债的比率。

In order to avoid the limitation of using only Tobin's Q to evaluate marketing performance and return on equity to evaluate financial performance, this paper introduces factor analysis to calculate synthesized performance, successfully processing totally 12 original indexes, such as return on net sales, average return on equity, return on total assets, per share earning ratio, current ratio, quick ratio, debt to assets ratio, rate of stock-turn, accounts receivable turnover, total asset turnover, main business growth rate, and total assets growth rate.

为了避免单纯使用托宾Q值度量企业市场业绩以及使用净资产收益率等单一财务指标度量企业财务业绩的缺陷，该文运用了因子分子法求得上市公司的综合绩效，成功地对总共12个原始绩效指标，如销售净利率、平均净资产收益率、总资产报酬率、每股收益、流动比率、速动比率、资产负债率、存货周转率、应收账款周转率、总资产周转率、主营业务收入增长率以及总资产增长率等进行了处理。

Before exchange rate regime changed, the statistical significance exchange rate exposure determining factors are leverage ratio, the quick ratio and the market / book value.

在汇率制度改变之前，具有统计显著性的汇率暴露决定因素主要是杠杆比率、速动比率及市价对帐面价值比。

However, the ratios of chl a/ch b and carotenoids/chls were dropped due to drought, independently of sampling unit.

然而，不管是用单位叶面积的色素含量或是单位叶鲜重的色素含量计算而来的叶绿素a和叶绿素b的比率以及类胡萝卜素和总叶绿素的比率对土壤干旱引起的变化趋势是一致的，都表现为降低。

Scatter diagram of the morphological differential value and molecular differential value shows plants molecular differential value≥2 are heterotipe. The correlation coefficient of the morpha uniformity ratio and molecule uniformity ratio is 0.98, extreme correlation. So the heterotipe criterion of the molecular differential value≥2 is made.

通过对14个品种278个株的形态差异值和分子差异值的散点图分析，得出形态差异值≥2为异型株；由形态一致性比率和分子一致性比率的相关性系数为0.98，相关极显著，确定分子差异值≥2作为判定异型株的标准。

In her research, published in a recent issue of the journal Current Anthropology, Cashdan found that career women were less likely to be curvaceous with the waspish waist and hourglass shape long associated with fertility.

但是，当Cashdan对37个来自不同人群和文化的妇女进行了腰臀比率的分析，他们的平均腰臀比率已超过了0.8，让人很难想到的是明星苏菲亚罗兰，杰西卡奥尔芭和更凯拉奈特利更是超过了这个比例。

The study on spatial distribution of the density of longevous people of Rugao County, Jiangsu Province, shows that the over-90 rate (number of people over 90 years old per 100000 in population) is high in some areas.

对江苏省如皋市长寿人口的空间分布研究表明，如皋市90岁以上长寿人口比率的空间分布具有地域聚集特徵，比率较高的区域分布在北部－东部－东南部发育较强的壤质雏形土和人为土上，在中西部的砂质雏形土和南部弱发育的年轻壤质－粘质雏形土上，比例较低。

The results showed that the rates of mature oocyte were 75.2％, 73.1％, 69.8％, 63.5％and oocyte at telophase of MI were 16.3％, 15.9％, 16.9％, 27.0％, respectively. The rates of maturation of oocytes cultured in TCM199 with serum, EGF and TGFαwere significantly higher than that of with BSA team (P＜0.05) and the number of oocyte stayed at telophase of MI in TCM199 with serum, EGF and TGFαteam were significantly less than that with BSA team(P＜0.05); Significant higher rates (66.6％, 66.6％, 73.6％) of normalα-tubulin distribution in oocytes cultured in TCM199+ serum, EGF and TGFαwere compared to that of TCM199+BSA(43.3％)(P＜0.05). The rates of oocyte with cortical granules in cortex were 58.8％, 33.9％, 54.7％and 47.9％respectively, there was significant difference between oocytes cultured with serum, EGF and BSA(P＜0.05). In conclusion, TGFαand EGF can promote the oocyte nuclear transition from telophaseⅠto metaphase of meiosisⅡ, and improved the expression and distribution ofα-tubulin during the ovine oocytes maturation; EGF and serum could promote oocyte cytoplasm maturation. The results suggested that EGF and TGFαmight substitute some substance in serum to improve the quality of oocyte nucleus maturation in vitro, but EGF might be more functional than TGFαto promote the maturation of ovine oocyte ooplasm.

三、EGF和TGFα对卵母细胞成熟的影响未成熟卵母细胞分别在TCM199基础培养液+血清、TCM199基础培养液+BSA+EGF、TCM199基础培养液+BSA+TGFα和TCM199基础培养液+BSA四组成熟培养系统中成熟培养，22小时后上述各组卵母细胞的核成熟率分别为75.2％、73.1％、69.8％、63.5％，处于第一次减数分裂末期的比率分别为16.3％、15.9％、16.9％、27.0％，在添加血清、EGF、TGFα各组中核成熟率显著高于其它各组(P＜0.05)，处于末期的比例明显低于其它各组(P＜0.05)：添加血清、EGF、TGFα各组在a-Tubulin蛋白的分布与表达上(66.6％、66.6％、73.6％)明显高于BSA组的正常率43.3％(P＜0.05)；各组CG发生迁移较好的卵母细胞的比率分别为58.8％、33.9％、54.7％、47.9％，血清组和添加EGF组CG迁移至皮质区的比例明显高于仅添加BSA处理组(P＜0.05)。

Baker yeast BY-1-8, Candida yeast CY-1-11, beer yeast SY-1-10 and milk brewer yeast MY-1 were used for a group of tests. Through the tests, the yeast strain (MY-1), which had the maximum riboflavin and extraction, was selected.

通过对面包酵母(BY-1～8)，假丝酵母(CY-1～11)，啤酒酵母(SY-1～10)，奶酒酵母(MY-1)等四种酵母的核黄素、自溶浸出物比率进行研究，选定了核黄素含量及自溶浸出物比率较高的奶酒酵母(MY-1)作为出发菌株。

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％。