This impervious layer or boundary will retard the free diffusion of moisture. This condition is referred to as case hardening.
这一不透气的壳层(或边界层)会阻滞水分自由扩散，这种情形称为表面硬化。
The design was taken an asphalt concrete impervious layer alternative as winter construction and pressing construction stage.
考虑冬季施工、工期紧等因素，设计采用沥青混凝土防渗层方案。
In these pits shops specialized channels, and impervious layer, used for the collection of refuse from fermentation gases and leachate.
在这些坑中铺有专门的管道和防渗层，用来收集垃圾发酵产生的气体和渗滤液。
Performance is not always as expected, often due to inability of the impervious layer to accommodate settlements at foundations, settlements due to bad compaction, seismic events, etc.
经常由于防渗层不能适应坝基的沉降、碾压不好造成沉降、地震等等，实施起来并不总是如预期的一样。
The coal and limestone storage yard must have a bottom impermeabilization system. This system may be constituted by a clay layer, a geomembrane layer, or other impervious material.
煤料和石灰石存放场必须有底部防渗系统。该系统可由粘土层、地质处理用膜层、或其他防渗材料组成。
Impervious surface moisture in building a permanent waterproof layer.
在建筑物表面形成抗渗防潮的永久防水层。
In accordance with the present invention, a liner for a hat, cap or similar head covering comprises a layer of moisture absorbent material which is backed by a layer of moisture impervious material.
按照本发明，是一顶帽子，帽子或头罩类似按照班轮由层的水分吸收材料是由一层的水分不透水物料支持。
At ordinary temperatures silicon is impervious to air, but at high temperatures it reacts with oxygen, forming a layer of silica that does not react further.
在常温下，硅不和空气反应，但是在高温下它和氧气反应，形成一层硅石，不再继续发生反应。
The foam dressing may have a water-impervious backing layer, which extends all the way over the top of the dressing and down to the wound-contacting surface.
泡沫敷料可具有不可透水的背衬层，该背衬层一直在敷料顶部上延伸并向下延伸到伤口接触表面。
The foam dressing may have a water-impervious backing layer, which extends all the way over the top of the dressing and down to the wound-contacting surface.
泡沫敷料可具有不可透水的背衬层，该背衬层一直在敷料顶部上延伸并向下延伸到伤口接触表面。
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