查询词典 water permeability

Department of Scientific History and Archaeometry; Graduate University of Chinese Academy of Sciences; Beijing 100049;4.Institute of Archaeology; Chinese Academy of Social Sciences; Beijing 100710; China;The fabrication technologies in terms of phase composition,structure,firing temperature,porosity,density and water permeability of ceramic water pipes and contrastive ceramic tilesexcavated from Anyang Yin Ruins of Shang dynasty were studied by X-ray fluorescence,X-ray diffraction and dilatometer,respectively.It was found that the contents of CaO,K2O,MgO and P2O5 in CWP were relatively higher than those in contrastive CT.The difference was further confirmed by the mass ratio of flux...

采用X射线荧光、X射线衍射、热膨胀等分析手段对比研究了安阳商代陶水管的制作工艺，发现陶水管化学成分中各类熔剂的质量分数均略高于对比陶片中熔剂的质量分数，CaO、K2O、MgO等助熔剂与A l2O3的质量比进一步证实该现象，而这种差异性则外在地表现为陶水管的气孔度低于对比陶片以及陶水管热膨胀曲线中出现玻璃化现象，该结果表明陶水管原料应为一种易熔粘土，或者在沉淀粘土中人为地掺和了草木灰类掺和料，这有利于陶水管烧制与成型，有助于熔剂在熔融状态下，较好地进入陶水管中的空隙，使陶水管变得更加致密，一定程度上有利于防止陶水管的渗水，显示出陶水管制作工艺的特殊性。

Shear zone 's favorable water permeability, abundant rainfall, suitable tempera ture as well as huge time span, make the deposit's secondary oxidation extremely developed. The content of copper oxides is 87-74%, the content of co balt oxides is 93-56%.

韧性剪切带良好的透水性、充沛的降水量、适宜的温度以及巨大的时间跨度，使矿床次生氧化作用极为充分，矿床铜氧化物含量为87-74%，钴氧化物含量为93-56%。

In this paper, permeable concrete pavement research background and significance, in view of the definition of permeable concrete pavement, characteristics and a brief overview of classification, and water permeability of concrete and its surface structure analysis, and then proceed with the design, the final list were permeable concrete pavement of a number of advantages, and applications are discussed and research, thereby found that there are problems and give solutions, and ultimately come to the conclusion and outlook.

本文阐述了透水性混凝土路面的研究背景和意义，针对透水性混凝土路面的定义、特点以及分类进行了简要概述，并对透水性混凝土及其路面构造进行了分析，然后进行配合比设计，最后分别列举了透水性混凝土路面的多项优点，并对其应用前景进行了探讨和研究，从而发现存在问题并给出解决方法，最终得出结论并进行展望。

In order to meet the needs of sports, it must withstand high strength trampling frequently. This requests the turf bed of sports field with strong surface firmness, good water permeability, high draining speed and compaction resistance ability, so as to provide the good playing quality, and meet the needs of turfgrass growth.

为了满足体育运动的需要，它必须经常承受高强度的践踏，这要求运动场草坪的坪床具有较强的表面强度、良好渗透排水性和抗板结性，以提供良好的运动性能，并保证草坪草的正常生长。

A lab test apparatus was developed into evaluating the noise reduction of the porous cement concrete. A constant head permeameter was developed to ascertain the water permeability of porous cement concrete, the influence of the porosity and pore size on the water permeability was studied.

另外，对多孔水泥混凝土的透水性能进行了研究，通过建立有效孔隙率、孔径大小与渗透系数的关系，结合其实际透水性能，得出了满足一般排水性路面排水要求的有效孔隙率范围和级配。

Studies on the dormancy characteristics of Pinus bungeana seeds from 7 representative seed sources show that the difference of water permeability of seed capsule was very significant among seed sources.The seeds from northern part of distribution area had a much higher water permeability than from the south.

对7个具有代表性种源的白皮松种子的休眠特性研究表明，白皮松种子种皮的透水性在种源间差异明显，表现出随地理纬度的增高而逐渐增大的趋势，分布越是偏北的种源透水性趋于加强。

The effect of N-phosphoamino acids on plant cells'membrane permeability was investigated by osmotic method. It was found that in all N-phosphoamino acids, only some phosphoryl polar amino acids such as DIPPSer, DIPPThr, DIPPHis, DIPPAsp, DIPPGlu, DIPPAsn and free serine, threonine could increase the water permeability in plant cell membrane. For example, after 20min. treatment by 1. 5mM DIPPSer, the deplasmolysis time of onion cells was shortened 50%.

三、通过透性实验研究了N-磷酰化氨基酸对洋葱、豌豆等植物细胞膜水透性及溶质透性的影响，发现在所有的N-磷酰化氨基酸及自由氨基酸中，仅有部分N-磷酰极性氨基酸和自由的丝、苏氨酸对植物细胞膜上水透性有增强作用，如1.5mM N-磷酰化丝氨酸可使洋葱细胞质壁复原时间缩短一半以上。

Results indicated that furrowing can make the soil of the ridge looser and soil porosity larger, so favoring the aeration and water permeability of soil, enlarging the storage capacity of soil water.

结果表明，起垄可使垄背土壤变得疏松，孔隙度增大，有利于土壤通气透水，增加土壤水库容。

This paper conducts comprehensive and in-depth research on the determination of unsaturated permeability coefficient and water-air flow during ponding infiltration by experiment research and theory research. The research is reduced as the following:(1) In this paper, in terms of the shortage of the current apparatus of water permeability for unsaturated soils, the new unsaturated steady seepage apparatus for measurements of unsaturated permeability coefficient has been developed based on improvement and amendment on original apparatus.

主要研究成果如下：(1)本文从非饱和土渗透特性研究的需要出发，针对目前研制的非饱和土渗透仪的不足，根据非饱和土稳态渗流试验装置量测非饱和渗透系数的主要特点及存在的问题，提出了新型非饱和土稳态渗流试验装置研制开发的整体思路，完成了重要内容的研制。

In order to prevent this kind of pollution, often spreads the organosilicon water-repellent, the polymer cement mortar, the emulsion resin, the epoxy resin etc on the inside surface of the quartz stone , although it can have certain protection effect, but also has the following insufficiency: Uses organosilicon water-repellent processing, the quartz stone material, cement and the mortar cannot form a sealed surface layer, is unable to suppress the hoar frost separation and the rain spot effectively; Uses polymer cement processing, not only material itself includes the hoar frost ingredient, moreover the water permeability is big, the protection effect is also not ideal

为防止这类污染，常在石材内面涂上有机硅防水剂、聚合物水泥砂浆、乳液树脂、环氧树脂等，虽能收到一定的防护效果，但也存在以下不足：采用有机硅防水剂处理，石材与砼、砂浆被贴面不能形成密封层，无法有效抑制白霜析出物和润斑；采用聚合物水泥处理，不仅材料自身含有白霜成分，而且水渗透率大，防护效果也不理想

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。