查询词典 permeability

The thorough knowledge of the gas permeability of softwoods can be gained by the flow-resistor of tracheids for the flow of gas.

本文从针叶树材管胞解剖结构出发，运用流体力学理论，导出了管胞 3个纹理方向渗透气体流阻的数学表达式，并由此计算了针叶树材管胞的气体渗透系数。

In past, injection of tracers was used to study the BSCB permeability after SCI, which was complicated in operation and will affect other investigations.

在以往的实验中一般采用示踪剂注射的方法研究SCI后BSCB的通透性变化，但此方法操作复杂，并且会影响其他形态的观察。

The endogenous tissue inhibitors to metalloproteinases can inhibit their activities. Both MMPs and TIMPs modulate capillary permeability.

基质金属蛋白酶抑制剂因子是它的内源性抑制剂，二者共同调节血管的渗透性。

Ultrasound may make reversible trauma on tissue by its biological effect, increase tiny crack and permeability of plasma membrane, enhance production and secretion of bFGF, promote growth of local microvessel, improve nutrition of microvessel and nerve ending.

通过超声的生物学效应可使组织发生可逆性损伤，细胞膜微小破裂增加，细胞膜通透性提高，同时细胞bFGF产生增加，最后bFGF分泌增加，促进局部微血管的形成，改善微血管和神经末梢的营养状况。

In the mixture gas of hydrogen chloride / nitrogen, the influence of pressure, concentration and cut-off ration are also researched on the permeability and separation factor.

在氯化氢和氮气混合体系，考察了压差、浓度和切割率对渗透系数和分离系数的影响。

The internal causes are the effects of salts, particularly chlorides and sulphates, in the constituent materials, interaction between the constituent materials, such as alkali aggregate reaction, volume changes, absorption and permeability.

内部起因是盐，特殊氯化物的作用和硫化，在构成材料，互作用在构成材料之间，譬如碱聚集体反应、容积变化、吸收和渗透性。

There are horizontally 37 subzones of 8 sand formations in the reservoirs in the lower member of Es_2 in Pucheng Oilfield, permeability differential is 5 to 30 times, it belongs to a multi-layer heterogeneous reservoir with integral water-cut of 92.85%.

濮城油田沙二下油藏纵向上有8个砂组37个小层，渗透率级差在5~30倍，是多油层非均质油藏，目前综合含水92·85%。

Faint cherry aroma with pure plant olive essence - high permeability, without the burden will not block pores, as if to find the original light cool and healthy skin!

淡淡樱花香味加上纯植物橄榄精华－高透气、无负担、不会阻塞毛孔，彷佛找到原来轻爽健康的肌肤！

The well-known empirical e-lgσ' relation is introduced into the study on one-dimensional nonlinear consolidation of one-layered soil under cyclic loadings. The corresponding consolidation equation is established with the assumptions that the decrease in permeability of soil is proportional to the decrease in compressibility during the consolidation process and that the distribution of initial effective pressure does not vary with depth.

将孔隙比e与有效应力σ'关系引入循环荷载作用下单层地基的一维非线性固结问题的研究之中，通过假定土体中的初始有效应力沿深度均匀分布和固结过程中上体渗透性的降低与压缩性的减小成正比，建立了低频循环荷载作用下单层地基的一维非线性固结问题的固结方程。

CO2 and H2S exist in the hydrocarbon zone and foramtion water,as the accompany gases of petroleum and nature gaso or components of formation water,which will cause corrostion to the cement sheath under certain conditions of humidity and pressure.It will decrease the cement sheath's alkalinity,which results in the decrease of cement sheath's strength,permeability increase,and places a premium on fluid channeling and borehole wall sloughs accident in plastic formation,shortening the oil- gas well's production lifetime and giving rise to tremendous ecomonic losses.

CO2和H2S作为石油和天然气的伴生气或地层水的组分存在于油气层或地层水中，在一定的湿度及压力条件下会对固井水泥环产生腐蚀作用，从而降低水泥环的碱性，使水泥环强度下降，渗透率增大，并诱发流体窜流、塑性地层井壁跨塌等事故，从而缩短油气井的生产寿命，造成巨大的经济损失。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。