查询词典 retention

Through the test of water absorbing, water holding and water releasing performances of all water retention agents, sawdust, vinegar stillage and cabbage palm, this paper points out the affect on ecological concrete of different water retention agent and also conclude the affect on ecological concrete holding water or water releasing of spacing ratios, water retention agents, materials addition and different stones.

通过对SAP高吸水树脂、聚丙烯酰胺和甲基纤维素三种保水剂、锯末、醋糟、棕榈对生态混凝土吸水、保水、失水性能的测试，分析得出三种保水剂对生态混凝土的影响关系以及阐述了空隙率、保水剂、添加剂以及骨料种类对生态混凝土保水和失水的影响；最后对保水剂进行了优选，并对保水机理进行了探索性研究。

Work in this paper focuses on the data mining from chromatographic retention index data. A retention index database that contains about 50000 records of retention index is firstly established. Projection pursuit technique is then utilized to do data mining upon the data in order to find out some valuable information about the relationship between the retention indices and structural descriptors. A novel algorithm for projection pursuit is developed in this work. Samples of alkane, alkene and cycloalkane are investigated.

中文题名化学数据挖掘新算法和定量构性关系基础研究副题名外文题名 New methodology in chemical data mining and foundational research on QSPR 论文作者杜一平导师梁逸曾学科专业分析化学研究领域\研究方向化学计量学学位级别博士学位授予单位湖南大学学位授予日期2002 论文页码总数115页关键词定量构性关系化学计量学数据挖掘馆藏号BSLW /2003 /O6 /2 化学数据挖掘正逐渐引起化学家们的关注。

The water retention value, the saline retention value and the fresh blood retention value of the modified surgical pledget are respectively 8.6 times, 2.8 times and 1.7 times higher than the original pledget.

该纱布的水吸附保持值、等渗盐水吸附保持值和新鲜血浆吸附保持值分别为未处理纱布的8.6倍、 2.8倍和1.7倍。

Result The dust-retention amounts per unit area and the dust-retention amounts per plant of different tree species had bigger difference. Among trees, the dust-retention abilities of Ligustrum lucidum, Platycladus orientalis, Cedrus deodare, Platanus hispauiea anti Spohora japonica were stronger. Among shrubs, the dust-retention abilities of Viburnum odoratissimum, Pittosporum tobira, Euonymus japonicus and Lagerstroemia indica were stronger.

结果］不同树种的单位面积滞尘量、单株树木滞尘量均存在较大差异，乔木中，以女贞、侧柏、雪松、悬铃木和国槐的滞尘能力较强；灌木中，以珊瑚树、海桐、大叶黄杨和紫薇等的滞尘能力较强。

The effects of many factors in the wet end on drainage and retention of PEO/attapulgite system: During the scope of 2-12, pH has no effect on drainage, and retention ratio lower in acidic conditions and higher in neutral or alkaline conditions. There were some improvement on slurry's drainage and some impairment on retention efficiency for the existence of inorganic salts. Lignosulphonate had no effect on drainage and made retention ratio decrease 5-8%; lignosulphonate and xylan had no effect on drainage and made retention ratio decrease a little. 5 .Attapulgite could be modified by intercalation.

纸机湿部系统的影响因素对PEO／凹凸棒粘土助留体系的助留助滤效果的影响表现为：pH值在2-12范围内，对助滤效果是没有影响的，使助留效果在酸性条件下较差，而在中碱性条件下较好；无机盐的存在使浆料的滤水性能有一定的改善，使助留效果有所削弱；木质素磺酸盐对助滤效果是没有影响的，使留着率下降了5—8％；木质素磺酸盐与聚木糖对助滤效果也是没有影响的，使留着率略有下降。

A method according to claim 1 in which said retention member comprises a preliminary retention member which is removably fitted to said root member, and is of sufficient length to pass through a hole in the wall of the mold, whereby to position the counterweight member and root member in the mold, said preliminary retention member being removable to permit the removal of the cured body of fibers, counterweight and root member from the mold, a second retention member being substituted for the first retention member having a length substantially equal to the thickness of the spar member and bonding said second retention member to the spar and to the skin sections in step.

一种方法，根据权利要求1中，表示保留的成员组成，初步保留会员是removably装上表示，根会员，并有足够的长度可以通过一个洞，在墙上的模具，即定位抗衡会员和根会员在模具中说，初步保留会员被卸除，以准许去除固化体纤维，抗衡和根系会员从模具，第二个保留会员正在取代第一保留会员有一个大大的长度相等的厚度该 SPAR公司会员和粘接说，第二个保留会员向SPAR公司和皮肤的章节一步。

Study on color retention process of dried litchi;2. Technology of litchi rind color retention during hot air drying of litchi fruit;3. In this study we obtain a hig h effect color retention ag ent on studying effects of several sing le or complex color retention ag ents.

本文通过对几种护色剂单体及复配体对肉制品的护色效果研究，获得了一种高效的复合护色剂，它可以使低温肉制品在存储一个月后仍保留有一定的红色，外观尚可。

Copper fixation rate affected by retention, fixation time, ligand type, and addictive. For all formulations, while other three conditions is the same, copper fixation rate of preservatives with low retention level is less than those with higher retention level; copper fixation rate of oven-dried bamboo samples is less than air-dried bamboo samples; copper fixation rate of amine-based preservatives is less than ammonia-based ones; copper fixation rate in some formulations containing carbonate and phosphate is higher than non-carbonate and non-phosphate ones.

在其它条件相同时，高吸药量时防腐剂的固着率明显高于低吸药量时的固着率；固着时间长的试样比固着时间短的试样具有更高的铜固着率；以氨水作配体的防腐剂固着性高于以乙醇胺作配体的；碳酸盐和磷酸盐在某些配方中能够改善防腐剂固着性。

The resultant cationized pulp fibers can obviously improve the retention of precipitated calcium carbonate filler in the furnish. Adding 2% of CPF （based on oven-dry pulp） can improve the retention of PCC from 61.1% to 83.4%, compared with the retention of PCC only 78.2% by adding 0.05% of CPAM, and also the application of CPF is better than adding EPI-DMA directly. At the same time, CPF can improve the drainage performance of the stock.

制得的CPF能显著提高沉淀碳酸钙填料的留着率，用量为2%的CPF即可使PCC的留着率从61.1%提高到83.4%，而CPAM在最佳添加量0.05%时仅使其留着率提高到78.2%，CPF应用性能优于直接添加EPI-DMA，同时CPF能够改善浆料的滤水性能。

But the retention of whole-genome duplications seems to have been rare, which has led to the suggestion that they are an evolutionary dead end.

但是这种全基因组复制的保有力被认为是非常罕见的（译注：这句话我不是很明白，我的解释是：这里的retention和基因组复制的保守性不是同一概念。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。