The ratio of pupils to teachers was 30 to 1.

学生和老师是301。

The column temperature can also influence the split ratio due to sample recondensation.

柱温在样品再冷凝过程中也会影响样品分流。

To establish coefficient multiplying ratio spectrophotometry for determination of pyramidon andcaffeinein naoning tablet .

建立脑宁片中氨基林和咖啡因系数倍测定法。

The surface ratio of conus to disc was calculated using a planimeter.

我们使用面积计测量圆锥与视神经盘表面值。

In the first phase, the oogonium has little cytoplasm and bigger nuclear-cytoplasmic ratio.

第1时相，卵原细胞细胞质较少，核质较大。

Linguistic indices contain the ratio of error-free T-unit (REFT) and subordinate clauses per T-unit (SCT).

语言指标包括无错误T-单位与全部T-单位之(REFT)和全部从句与全部T-单位之(SCT)。

The Determination of Cyclopenthiazide by using the ratio absorption coefficient in UV-spectrophotometer was studied.

用紫外分光光度吸收系数法进行了环戊噻嗪百分含量测定法研究。

In the period of ectatic cataract,mature cataract or hypermature cataract,the relevant ratio of ultrasonography is 100%.

膨胀期、成熟期、过熟期超声检出可达到100%。

The boron deficiency plant appears inter-venial chlorosis, thickening, crisping leaves and increased leaf weight ratio (LWR).

缺硼使叶重(LWR)提高和叶片脉间失绿、变厚、变脆。

Dimethoxymethane possesses higher quantity of oxygen, higher ratio of hydrogen to carbon and lower flash point.

甲缩醛含氧量大、氢碳高、闪点低，加入柴油中能够提高其十六烷值。

A new method of measuring the ratio of thermal emission rate to the photoexcitation constant is presented.

提出了在考虑吸收系数强度特条件下一种测量热激发速与光激发常数值新法。

Its ratio of inapparent infection to apparent infection is about 100:1.

该病隐感染与显感染例约为100：1。

Research of the influences of Foam Expansion Ratio (FER) and the stability of foam to the cutterhead torque.

通过对试验结果分析,得出气泡稳定发泡倍对刀盘扭矩影响规律。

To prepare RHR model by 2K1C and observe the ratio of the left ventricular weigh(LVW)and the body weigh(BW).

采用二肾一夹(2K1C)法复制RHR模型,观察血压和左心室重量(LVW)、LVW体/重(BW)值。

The cross-section curvature ductility ratio for R.C inequiaxial T-shaped, L-shaped and cress-shaped columns is calculated by numerical method.

摘要采用非线全过程数值分析法，计算了钢筋混凝土不等肢T形、L形和十字形柱截面模型在多种工况下截面曲延。

So some renovations should be made,for example,increasing the solvent ratio of propane deasphalting;using hydrofinishing instead of clay treating;mo...

增加丙烷脱沥青溶剂,用加氢补充精制代替白土精制等,此外,在含硫原油生产基础油时,对原油也应适当选择。

Conclusion The infestation ratio and the ectozoa index of these hosts were lower with the exception of hedgepig.

结论除刺猬外，各鼠种染虫和染虫指数较低。

A high K ratio method for fatigue precracking in welding position toughness specimen of thick steel plate was developed.

提出了预制厚钢板焊缝断裂韧度试样疲劳裂纹“高K法”。

It is suggested that the specific speed would be replaced by diametric ratio,and the new nameplate would be used.

建议转速应为直径所取代,并启用水斗式水轮机新铭牌。

Aluminium electrlysis by means of low molecular ratio electrolyte is an important mark for centre-worked prebake cell at present.

摘要采用低分子电解质进行铝电解生产是现代中间下料预焙槽重要标志。