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Optimal mixing ratio of SRA as delay forming agent in cement treated base is 0.05%-0.06%; the influence of compacting delay on strength and dry density of road base may be reduced by SRA additive, forming time may be delayed to 9h; after the forming time is delayed to 4h, 6h and 9h, the strength and dry density shrinkage of cement-treated base with SRA admixture are much less than that of those without SRA.

SRA用作水泥稳定粒料路面基层的延迟成型剂的最佳掺量在0.05％～0.06％：用SRA可降低因延迟压实对水泥稳定粒料基层的强度和干密度的影响，可把延迟成型时间延长到9h；在成型延迟4h，6h，9h后，掺入SRA的水泥稳定粒料的强度和干容度损失明显小于未掺外加剂的混合料在相同延迟成型务件下的强度损失。

The optimal fermentation conditions for Penicillium sp. D-l producing chitosanase were incubated at 32, in 500ml Erlenmeyer flask containing 100ml medium (pH 5.0) with 2.5% chitosan as substrate.

通过研究，确定了Penicillium sp.D-1产酶的最适发酵条件：培养温度32℃，底物壳聚糖浓度2.5％，装量为500ml三角瓶装100ml培养基，培养基pH5.0。

Objective To compare the different effects between acute moderate hypervolemic hemodilution using Ringer's lactate solution and acute moderate isovolemic hemodilution using dextran 40 on coagulation mechanism,and to provide clinical basis for selecting optimal dilution.

目的：比较乳酸钠林格液扩容性急性血液稀释和低分子右旋糖酐等容性急性血液稀释对凝血机制的影响，为合理选择稀释液提供临床依据。

We mainly employ the theory of new institutionaleconomics to testify the objectivity and protracted nature of the institutionalevolution and the significant meanings to China's economic reform. We alsoemploy Berkson-samuelson's social welfare function to testify the existence ofoptimal tax reform, and with improving Hettich-Winer's tax model, we putforward the route choice for the optimal tax reform.

主要用新制度经济学理论论证了制度变迁的客观性、长期性及对中国经济改革的重要意义，用柏格逊--萨缪尔森型社会福利函数论证了最优税制改革的存在性定理，借鉴和改善赫蒂奇和温纳的税制模型提出了最优税制改革的路径选择，同时介绍和评价了公平课税论、最适课税论和财政交换论，为深化我国税制改革奠定了理论基础。

Computational experiments show that. 1 for small size HFSS scheduling problems, the average deviation of GDA from the optimal solution is 0.01%; 2 for medium-large size problems, the performance of GDA is 10.45% better than that of NEH algorithm.

实验结果表明：对于HFSS问题，在小规模情况下，GDA算法与最优解之间的平均偏差为0.1%；对于较大规模的情况，GDA比NEH算法平均改进10.45%。

The result showed Putter,Merit,and Kentucky bluegrass,etc were optimal species for concentrating cadmium and reconstruct...

分析结果表明：普特、优异、结缕草草地早熟禾等草种对镉富集能力较强，是改造镉污染地的优良草种。

In the days of sailing vessels the crew were afraid they would be becalmed on the ocean.

在使用帆船的时代，船员们担心他们会因为无风而无法在海洋上航行。

As long as foreign donors pay the PA's salary bill, few expect a new intifada.

只要外国继续为巴权力机构的薪水买单，希望发动新暴动的人便寥寥无几。