预作用

In the present work, the technique and conditions of the presentment have been investigated, as well as the effect of cleaning, etching and activation upon electroless nickel-phosphorus plating.

研究了在SiCp/Al复合材料表面化学镀Ni-P合金的预处理工艺，系统分析并阐述了除油，粗化，活化等工序对化学镀Ni-P合金的作用和影响。

In this paper, we mostly tell of the usage of pretreatment technique in validate identify system.

本文主要讲述指纹图像预处理技术在验证式身份鉴定中的作用。

Objective: To observe the protective effects of prostaglandin E1 on myocardial ischemic injury induced by isoproterenol in rats.

目的：观察前列腺素E1(PGE1)预处理对异丙肾上腺素诱导的大鼠急性心肌缺血性损伤的保护作用。

These results suggest that the cardioprotection of BK-induced preconditioning be due to stimulation of prostaglandin production.

结果提示缓激肽诱导预适应对缺血再灌心肌的保护作用与促前列腺素生成有关。

Aimed at salt lakes in Qaidam, the qualitative and quantitative simulationwe made can further enrich and develop the theory of mixture about the formation and evolution of salt lakes. Some results we obtained can be theoretically used to choose and establish technological processes of a salt pan for exploiting K resource of MgSO4 sub-type salt lakes in Qaidam Basin.

针对柴达木盆地盐湖，从定性或定量模拟研究的角度，我们的研究丰富和发展了盐湖形成演化过程中的混合掺杂作用理论，某些研究成果可以用于柴达木盆地硫酸镁亚型盐湖钾资源开发前期选取和进行工艺路线设计的理论预判断上。

We are asking the "reasonable doubt" standard to serve a function that it was not originally designed to serve, and it does its work predictably badly.

我们正要求"合理怀疑"的标准提供一种其原本未被设计提供的一种功能，而且，其可以预知地未能适当地起到其作用。

Calcium carbonate and soluble glass and so on were confected as alkaline antifouling agent. The Infrared Spectrometry results showed that 2275-2250 cm~(-1) diagnostic absorb wave crest in part A and 3390-3200 cm~(-1) in part B and 1730 cm~(-1) in coating film strongly proved polymers reacted just as the reacting mechanism, that means polysiloxane which offer low-surface-energy property linked Polyurethane system by —OH groups reacting with —NCO groups. Relative molar mass of part A and part B was determined by Gel Permeation Chromatography and the results were appropriate. Surface-energy was determined and results were between 33.6-47.17 mN/m and it increased when alkaline antifouling agent was put into the coating. Alkaline antifouling agent was releasing steadily when the coating film was dipped in seawater. As time gone, the pH value of seawater was increasing. Solubility parameter and results showed that there was no corrasive phenomenon between the polyethylene strand and the coating.

红外光谱分析结果表明，出现在A组分中的2275～2250cm~(-1)处的异氰酸酯特征吸收峰、B组分中的3390～3200cm~(-1)处硅羟基的特征吸收峰及出现在固化后涂膜中的1730cm~(-1)处氨基甲酸酯基团的特征吸收峰证明了涂料成膜物质交联固化符合本文的设计要求，即赋予涂膜低表面能特性的有机硅组分通过—OH基团与—NCO基团的反应已经链接到聚氨酯体系中；凝胶渗透色谱结果表明，成膜物质的A、B组分均为低分子量，符合预聚物的要求；涂膜表面能的测算结果表明，涂膜的表面能在33.6～47.17mN／m之间；加入碱式防污剂后涂膜的表面能略有升高；碱式防污剂的释放平稳，随着涂膜在海水中浸泡时间的增长，pH值有增加的趋势；用溶解度参数原则来评价涂料与网绳的涂装，结果表明，本试验研制的防污涂料对聚乙烯网绳无溶蚀作用。

These protective effects were at-tenuated by treatment with spermine (20μmol/L) during the first 10 min reoxygenation.

复氧期的前10min用精胺(20μmol/L)处理可减弱低氧预处理的心脏作用。

These protective effects were attenuated by treatment with spermine (20 μmol/L) during the first 10 min reoxygenation.

用环孢菌素A（0.2 μmol/L）处理20 min（复氧前5 min到复氧期的前15 min）则减弱上述精胺在低氧预处理中的心肌作用。

A low pressure accumulator accumulator nitrogen standard atmospheric pressure of the 7MP. Its main role is to set up a pre-press to ensure that the fuel tank valve 13 to hydraulic cylinders in the main action, and to ensure that reversing valve and main valve between the rapidly reversing.

蓄能器氮气压力不足蓄能器的标准气压为7MP。，其主要作用是建立一个预压，以保证闸阀油缸13先于主液压缸动作，并保证闸阀换向间和主换向阀迅速换向。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。