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The results indicated that, when dissolved oxygen concentration varied from 6 mg/L to 9 mg/L, turbots in nano-metre pure oxygen system were higher on growth, survival rate and feed conversion efficiency than those of air system; A farming trial was conducted to determine growth difference of turbot between pure oxygen and air system. Length growth, weight growth, survival rate and FCE were better in nano-metre pure oxygen system than air system. The results suggested that nano-metre pure oxygen was better than aeration in turbot farming system when dissolved oxygen concentration was from 6~9 mg/L.

结果表明，微米纯氧Ⅰ组大菱鲆的体重增长、成活率、肥满度及饵料转化率高于机械增氧组；微米纯氧Ⅱ组各指标低于机械增氧组。7个月的大规模生产试验（800 m2水面，溶解氧6~9 mg/L）表明，采用微米纯氧气泡增氧养殖大菱鲆，各测定指标均显著高于机械增氧，可以加快大菱鲆生长，提高成活率和饵料转化率。

In conclusion, seminal zinc concentration is correlated with sperm count and the duration of abstinence in subfertile men. In men with normozoospermic semen, high seminal zinc concentration may have an adverse effect on the ZPIAR.

本实验得出结论：生育力不足男性的精液锌浓度与精子数和禁欲时间相关；精子正常男性的高精液锌浓度可能对透明带诱导的顶体反应有副作用。

On the basis of development of the iron ore concentration technologies in recent years in our country,the general situation of research and application of new equipment and new process for iron ore concentration is presented.

随着我国经济的高速发展，国内对铁矿石的需求量越来越大，近年来，铁矿石进口量大幅增长，2000年进口量6 997万t，2002年增长到1.11亿t，2004年达到2.08亿t。这在一定程度上引发了世界范围内的铁矿石价格暴涨，造成了外汇的大量流失。

Wuhan XinFuLai Fertilizer CO,Ltd is a high-technology corporation which engages in research,develop produce and sale on total-nutrition,high-concentration and wate-soluble fertilizer with macro,seond and micro nutrients,and import quality fertilizers.since the company begins,it has not only successfully distributed and promoted LvBoLai water-soluble fertilizer and Blackmore seeders from UsA,but also researched and promoted XinFuLai high-concentration balanced fertilizer,which are both very popular in China.

武汉新富莱肥料有限公司是一家主要从事全营养高浓缩的大、中和微量元素水溶性肥料的研究、开发、生产、销售，以及进口优质肥料代理的高新技术企业。公司自成立以来，已成功代理和推广美国绿博莱系列水溶性肥料和美国Blackmore优质播种机械，并成功研制、推广新富莱系列高浓缩平衡肥料，深受国内用户欢迎。

The twig production of different clones is different, from 5.5 twigs per month to 14.8 twigs per month. The rooting rate, root number and root length change regularly as the concentration of IBA goes up from 0.05 to 2.00 mg/L. At the concentration of 0.05 mg/L ppm IBA, rooting rate and root length are the highest. Cutting substrate also has eminent effect on rooting rate and survival rate, 50% peat plus 50% sub-top soil is the best substrate. The survival rate differs greatly among clones, from 56.7% to 90.0%. Rooting rate and survival rate change regularly as season changes. The rooting rate of May and June is middle, that of July and August is high and that of September and October drops rapidly. The survival rate is low in May, September and October and high in June, July and August.

结果表明：不同无性系的萌条数量有显著差异，高的达14.8条／月，低的5.5条／月，平均9.1条／月，从0.05~2.00 mg/L，随着IBA浓度的提离，生根率、根条数、总根长等生根指标均呈现有规律的变化；综合考虑各种生根指标，以IBA0.05 mg/L为最佳生根激素处理，扦插介质对柚木插穗生根有显著的影响，以泥炭土＋黄心土按1：1混合为最佳扦插介质；不同无性系的扦插成活率不同，从56.7%至90.0%，变动幅度大，随扦插季节变化，生根率和成活率均呈现有规律的变化，5~6月份的生根率中等，7~8月最高，9~10月份迅速下降，成活率随季节的变化也是两头低、中间高，6~8月的成活率最高，大于93%。

The effects of concentration of complexing agent isooctyl alcohol and different dilution agents (kerosene, toluene and methyl-phenol) on extraction efficiency, coefficient of distribution and phase splitting time were investigated. The best extraction result was achieved with toluene as dilution agent and the concentration of complexing agent isooctyl alcohol of 0.5.

论文研究了络合剂异辛醇浓度、不同稀释剂对萃取率、分配系数和分相时间的影响，当甲苯作为稀释剂，络合剂异辛醇浓度为0.5时萃取效果最好。

The results showed that lower concentration of the NaCl had scarcely any influence on the regenerative velocity. Higher concentration of the NaCl caused death of regenerating planarians, KCl has stronger poisonosness towards regenerating planarians, CaCl2 (0.1% and 0.3%) could increase the regenerative velocity.

结果表明：跟对照组相比，低浓度氯化钠对涡虫再生速度影响不大，高浓度氯化钠引起涡虫解体；氯化钾对再生涡虫的毒性较大；0.1%和0.3%氯化钙可以提高涡虫的再生速度。

The results showed that removal effect of periphyton on nitrogen was significant.Cumulative removal ratio of nitrogen was up to 60%,the nitrogen concentration decreased from 5 to 2 mg /L or so within two weeks.Cumulative removal ratio of nitrogen was closely related with nitrogen concentration,working time and biomass of periphyton.

结果表明，附着生物对水体中的氮有显著的去除效果，半个月内，附着生物对水体中总氮的累积去除率可达60%，在有附着生物的水体中总氮浓度从5 mg/L左右下降到2 mg/L左右；附着生物对水柱中氮的累积去除率和水柱中氮的浓度、附着生物的生物量以及附着生物作用时间密切相关。

In the dynamic experiment of wet air oxidation of phenol with pelletized Ru/ZrO2-CeO2, phenol and COD reduction was maintained at 96% during 110 h of reaction. The concentration of the main intermediates was small. In the experiment of catalytic wet air oxidation of phenol, the leaching concentration of active species was small. There were small amounts of carbonaceous deposits on the surface of the used catalysts, and the carbonaceous deposits can be completely oxidized at 300℃.

在110h的催化湿式氧化苯酚反应中，苯酚和COD的去除率维持在96%左右，反应过程中活性组分的溶出浓度很小，催化剂表面有少量的积炭，但积炭在300℃能够被完全氧化。

Furthermore, the structures of DNA molecules varying with concentration of new modification agent were studied, and it was found that when the new modification agent concentration was 1:1000, DNA molecules were successfully fixed and extended on the modified mica surface and well-distinguished DNA strands were imaged by AFM.

并进一步观察了不同DAPS浓度下DNA分子的吸附行为，发现当DAPS/甲醇体积比浓度为1：100时，DNA分子呈现出大而复杂的形态，发生了分子内和分子间的碱基相互配对；当体积比浓度为1：3000时，即没有分子内和分子间的碱基相互配对，也

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷