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First,through monofactorial experiment,we studied the influences of pH,temperature and substrate concentration on acidic trehalase activity of baker's yeast.

首先通过单因素实验研究了pH值、温度、底物浓度对面包酵母酸性海藻糖酶活性的影响，然后通过正交试验得出了酸性海藻糖酶活性测定的适宜条件：海藻糖浓度1.6%、温度30℃、pH 4.0、酵母菌泥接种量为0.02g/mL。

A multi-level model is introduced to investigate the influence of carbon concentration on compensation mechanism in undoped GaAs crystals.

引入多能级模型研究了非掺GaAs晶体中碳浓度对电学补偿机制的影响。

In order to study the effects of salt treatment with different NaCl concentration on the seed germination and the content of Na~+ and K~+ in the seed coat and embryo of Hibiscus hamabo Sieb.et Zucc., the seeds were cultivated by 1/4 Hoagland nutrition solution with 0, 50, 100, 150 and 200 mmol·L~(-1) NaCl, the germination rate and imbibition rate were measured every day, the content of Na~+ and K~+ in seed coat and embryo was determined when the seeds were treated for 5 and 10 days respectively; and after 15 days , the ungerminated seeds in 1/4 Hoagland nutrition solution with NaCl were cultivated by 1/4 Hoagland nutrition solution without NaCl.

用NaCl浓度为0、50、100、150和200 mmol·L~(-1)的1/4 Hoagland营养液培养海滨木槿Hibiscus hamabo Sieb.et Zucc。

Refer to the finned tube separator and the uniflow cyclone separator, the effects of the inlet particle concentration on the separating efficiency and the pressure lose is studied.

针对鳍片管束分离器和下排气旋风分离器，研究了入口颗粒浓度对分离效率及阻力的影响

Concentration on execution also results in unreviewed test designs.

集中于执行测试也导致未经审核的测试设计。

The effect of food concentration on characteristics in life history of Brachionus urceus, such as the duration of principal development stage, net reproductive rate and mixis rate in all the offspring, was studied by the method of clonal culture.

方法］采用单个体培养法，研究了不同浓度的蛋白核小球藻对壶状臂尾轮虫主要发育阶段历时、净生殖率以及全部后代的混交雌体百分率等生活史特征的影响。

Rollei has always been a very product oriented company and they are putting more concentration on product development than other marketing aspects.

禄莱一直是一个非常产品主导型的公司，对产品发展的重视要远远超过对任何市场营销手段的重视。

With the help of strength tester,fiber cutting machine and arraying the fiber according to length by hand,the influence of alkali concentration on properties of flax tow is studied.

通过束纤维强力仪、纤维切断器、手排长度法等仪器和方法研究了烧碱浓度对亚麻落麻纤维性能的影响。

With the concentration on the tragic hero, Shakespeare dramatizes the whole world around the hero.

随着集中悲剧英雄，莎士比亚生动全世界各地英雄。

The influence of deposition potential and Na-citrate concentration on composition and morphology of electrodeposited films was studied in detail.

深入探讨了沉积电位和柠檬酸钠浓度对预制层的形貌和成分的影响规律。

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％。