大幅度的

And meanwhile, the result show that, stomatal restriction was the main factor of the net photosynthetic rate's decrease in the leaves of 4 Dactylis glomerata L. when stress in slight water stress and the non-stomatal restriction was the main factor of the net photosynthetic rate in the leaves of 4 Dactylis glomerata L.

盆栽控水条件下4份鸭茅光合作用机理的研究表明，随着干旱胁迫程度的加强，4份鸭茅种质的净光合速率、蒸腾速率、气孔导度及叶绿素含量均有较大幅度的降低，其中抗旱性强的ZXY04P-201下降的速度慢，幅度小，而抗旱性差的ZXY04P-239下降速度快，幅度大。

As the addition of dry time, solid content shows the downtrend of little scope, dry time is negligible to the influence of solid content not plan; as dry temperature elevatory, the solid content of adhesive is shown substantially downtrend, temperature is more apparent to the influence of solid content, but in 115 ℃- between 125 ℃, the change of solid content is very little, the influence is negligible not plan.

随着干燥时间的增加，固体含量呈小幅度的下降趋向，干燥时间对固体含量的影响可以忽略不计；随着干燥温度的升高，胶粘剂的固体含量呈大幅度的下降趋向，温度对固体含量的影响比较明显，但是在115℃-125℃之间，固体含量的变化很小，影响可以忽略不计。

The effects of the surfactants, trioctyl phosphine oxide, sodium dodecyl sulfonate and hexadecyl trimethyl ammonium bromide, on the extraction rate of Co^2^+ were investigated. The acceleration in the kinetics in contributed to the associated molecule~2 TOPO taking part in the extraction process directly. The decrement effects of SDS or CTMAB on the rate of extraction kinetics of Co^2^+ with HDEHP were also observed, which caused by the adsorption of molecules of SDS or CTMAB on the interface and decreased the interfacial adsorption amount of HDEHP. In addition, the extraction rate was reduced by a bigger margin in HDEHP-SDS system. This can be explained in terms of the formation of an electric field at the interface.

研究体系中加入不同表面活性剂所引起萃取速率的不同改变：三辛基氧化膦因与HDEHP形成可萃取的Co^2^+活性分子缔合物，降低了萃取过程活化能而使反应加速；十二烷基磺酸钠和十六烷基三甲基溴化铵因占据发生萃取反应的界面区，减小了HDEHP与Co^2^+反应的机会而使反应减速； SDS还因其在界面形成较强的负电场，造成Co^2^+的附加势能而使萃取速率有更大幅度的降低。

Results from the experiment indicated that the content of petroleum hydrocarbon was decreased greatly after the biodegradation of 47 days,and the inoculable microbe had some effects on the bioremediation of soil contaminated by petroleum.

利用所得的天然混合菌组以及筛选菌种的组合在土壤相条件下对石油烃的生物降解进行尝试，结果表明，经过47 d的生物降解，土壤中石油烃的含量有大幅度的降低，接种微生物对生物修复石油污染土壤能起到一定作用。

Through the exact control of welding current, the seaming figure and crystal organization can be improved, and the splash can be reduced, therefore, the mechanical property of seaming is enhanced.

通过对焊接电流波形的精细控制，可以减少焊接过程的飞溅、改善焊缝的形状和结晶的组织形态，进而使焊缝的机械性能得以大幅度的提高。

The results showed that the adhesion between rubber and steel cord increased under unaged,hot air aging or brine aging conditions as the level of cobalt ...

结果表明，随着钴盐用量的增大，在未老化、热空气老化及盐水老化条件下，胶料与钢丝的粘合强度有所提高；在湿热老化条件下，粘合强度由于热量和湿气的交互作用而发生较大幅度的下降，但钴盐用量在10份时粘合强度的下降为最小。综合胶料初始和老化后的应力应变性能和粘合强度，以10份钴盐用量为最佳。

In this work the unhomogeneity of microstructure in product strips has been studied, and the methods to control grain size with the hot rolling technological parameters are given. The capacity to control the property unhomogeneity of hot strips has been greatly improved after using the methods. According the statistics of production, the the property unhomogeneity over 99% strips is less than 80 MPa in a batch of coils, and less than 40MPa in a coil.

8对大量实际生产带钢组织和性能的不均匀性进行了研究，提出了通过调整热轧工艺参数来进行晶粒尺寸均匀度控制的的具体措施，实际生产采取该控制手段后，使宝钢对管线钢性能波动的控制水平得到大幅度的提高；强度波动由管线钢生产初期的批量内150～200MPa，卷内100MPa提高到批量内00MPa，卷内0MPa，可按合同交货；大生产实际水平为：99％产品的强度波动量达到批量内0MPa，卷内0MPa。

Model PMG series high efficient ball mill have been designed with the merits of open circuit grinding system and important renovations on traditional ball mills. Besides they have all the good advantages of open circuit mills, production capacity has been raised substantially, product becomes super fine and blains have been increased. It has provided a new type of grinding equipment for producing high strength grade cement with high output and super finess.

PMG 型系列高效球磨机是在开流粉磨系统所具有的优缺点中扬长避短而设计的高效球磨机，对传统的球磨机做了重大的改进，除具有开流粉磨系统一切优点之外，与同规格的球磨机相比， PMG 型系列高效球磨机产量有了大幅度的提高，且粉细、比表面积增大，实现高产、高细，为生产高标号水泥提供了一种新型的粉磨设备。

But because of its big slenderness ratio, smaller rigidity and damping, it is easy to cause a larger vibration in the windload and iceload function and so on, mast structure destruction accidents frequently occurred, has caused engineering and academic circles\\\s concern, this article summarizes the main structure damage diagnosis methods, carrys on preliminary dynamic analysis and the time-frequency distribution analysis with the vibration signal to the mast structure, and proposes the signal processing method is a appropriate method on the diagnosis to the mast damage.

但是，由于桅杆结构长细比很大，刚度、阻尼较小，在风荷载、裹冰荷载等作用下容易产生较大幅度的振动，桅杆结构的破坏事故时有发生，引起了工程界和学术界的重视，本文总结了几种主要的结构损伤诊断方法，并对桅杆结构进行了动力分析和振动信号时频分析，并提出信号处理的时频方法对桅杆损伤进行诊断比较合适的。

In pumping high-viscosity oil, with the increase of the shaft speed, the efficiency of the pump at the optimum operating point is improved, and the flow rate and hoisting height at the optimum efficiency point rises, therefore the rated speed of the viscous oil pump should be remarkably higher than that of the water pump.

输送高粘油时，随着泵轴转速的提高，离心泵最优工况点的效率提高，最佳效率点的流量和扬程也相应提高，因此，输送粘油用的泵的设计转速必须比水泵有较大幅度的提高。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。