查询词典 impermeable

Results show that plant communities on the flat sandy land with impermeable stratum below root layer, in terms of average soil water content in different plots, ranke in the ascendant order of Leymus secalinus community (4.91%), Oxytropis aciphylla community (7.42%), Caragana korshinskii Community (10.36%), Artemisia ordosica Community (12.55%), and bare sandy land (16.27%). In the same plant community, soil water content is different in different seasons.

结果表明，在根层以下为不透水层的平沙地，各样地平均土壤含水量由小到大依次为：赖草群落(4.91%)＜猫头刺群落(7.42%)＜柠条群落(10.36%)＜黑沙蒿群落(12.55%)＜裸地(16.27%)；同一植物群落的土壤含水量在各个季节也不相同。

Reservoirs may be formed along the fault plane where the shearing action has caused an impermeable bed to block the migration of oil and gas through a permeable bed.

地壳岩层因受力达到一定强度而发生破裂，并沿破裂面有明显相对移动的构造称断层

Using the bond-fluctuation-model and vacancy-diffusion-algorithm,the microphase structure, segment profile and structure factor of molten symmetrical AB diblock copolymer confined between two impermeable plate surfaces are simulated by Monte Carlo method based on simple cubic lattice.

采用改进的键长涨落空穴扩散算法对平板狭缝中的对称两嵌段共聚高分子熔体的微相分离形态、密度分布以及结构因子进行了MonteCarlo模拟。

Suberin A fatty acid polyester produced in the walls of the endodermis and in bark, where it renders the tissue impermeable to water and resistant to decay.

木栓质：是植物内皮层和树皮层细胞壁产生的一种脂肪酸聚酯，它使组织具有抗水性和抗分解性。

These work are mainly based on two assumptions: one is called as the Deeg-Pak assumption, i.e., the crack is assumed to be an impermeable slit and thus the electric field inside the crack is equal to be zero; the other is called as the Parton assumption, i.e., a crack is treated as a permeable cut across that both the normal components of electric displacement and the tangential component of electric field are continuous.

裂纹问题：对于压电介质内的裂纹问题，近十年来人们已做了大量的理论分析工作，这些工作主要是基于两种假设：一种称之为 Deeg-Pak 假设，即假设裂纹为电非渗透的，因此裂纹内的电场等于零；另一种称之为 Parton 假设，即假设裂纹为电渗透的，且跨越裂纹上下表面电位移的法向分量和电场的切向分量是连续的。

All the causes responsible for these diseases can be classified as the lack of effectively impermeable barrier beneath the waste, the poor control of the surface runoff, the secondary failure of final cover, the unco...

这些经验教训对今后的废物处置实践有借鉴意义。

Experiment of convective drying of wet quartz sands as porous media, which had adiabatic-impermeable boundary of undersurface and convective boundary of upside, was carried out in laboratory.

本文以上边界对流传热传质边界和下边界绝热绝湿边界的含湿石英砂填充床为实验对象，进行了对流干燥实验。

With only a onemonth interim dressing, two-thirds remained coronally impermeable, i.e., no penetration could be observed along the restoration margin.

仅仅一个月的暂封，冠方已经仅有三分之二是没有微渗漏的。换句话说，沿着修复体边缘没有渗漏。

With only a onemonth interim dressing, two-thirds remained coronally impermeable, i.e., no penetration could be observed along the restoration margin.

换句话说，沿着修复体边缘没有渗漏。这些研究的结果显示，由于可能的冠方临时修复体的微渗漏，暂封材料最长不要超过4周

The objects are covered with impermeable decorative coatings of glasslike material.

这些物体上覆盖着玻璃状不透水的装饰涂层。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。