以下为句子列表：
英文: A membrane reactor (MR) that combines hydrogen permeable membranes with a methanol steam reformer promises considerable weight and space savings.
中文: 薄膜反应器因提供可同时进行甲醇重组反应的管状反应器与供氢气渗透分离的薄膜并具备质量轻体积小的优点而常被采用。
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英文: A painless pulse of electricity can drive drugs, which tend to be charged, through the impermeable outer layer of the epidermis and into the blood vessels of the dermis.
中文: 无痛的电流脉冲可以趋使药物（通常会带电荷）穿越不通透的表皮外层，进入真皮层的血管。
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英文: A thin sheet of natural or synthetic material that is permeable to substances in solution.
中文: 膜由天然的或合成的材料制成的薄片，可允许溶液中之溶质通过
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英文: Abstract: In this article, starting from solute′s transport a nd diffusion equati on, aiming at the saturation state of liquid in homogeneous soil of impermeable stratum and on the condition that lots of saturated solute (e.g. nutriment) on t op of the so
中文: 文摘:从溶质输移扩散方程出发，针对强透水层上均质土壤的液体饱和状态，在顶层含有大量饱和溶质(如养分等)维持着渗透扩散的条件下，进行严密的数学推证，给出均质土壤中溶质浓度分布的解析解。
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英文: According to the constitutive relationship in linear piezoceramics, elliptical crack problems in impermeable case are analyzed with hypersingular integral equation method.
中文: 摘要在线性压电陶瓷本构关系和裂纹边界绝缘的框架下，用超奇异积分方程的方法对椭圆类片状裂纹问题进行了重新研究。
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