Because fresh water is lighter, care had to be taken not to draw down the lake too much in any given year lest the covering layer of fresh water becomes too light to hold the salt water down.
因为淡水比重较轻，所以每一年从湖中取水都需要慎之又慎，否则顶层淡水过少会无法覆盖咸水。
The influence of abr diameter is stronger than the thickness of concrete protective covering layer.
同时钢筋直径对钢筋锈胀力的影响程度要大于混凝土保护层厚度的影响。
The utility model belongs to the envelope improvement, composed of an envelope, an adhesive layer and a covering layer.
本实用新型属信封的改进。由信封、粘胶层、覆盖层组成。
The best is double plastic membrane cover, although more expensive than plastic covering layer higher, but the heat preservation effect is good.
最好是覆盖双层塑膜，虽然成本比单层塑膜覆盖高些，但保温效果较好。
Therefore, to investigate the minimal thickness of covering layer of underwater tunnel is greatly engineeringly significant.
因此，对水下隧道的最小覆盖层厚度进行研究具有较大的工程意义。
The magnetron-sputtering ion plating aluminum film is not simply an out- covering layer of a single substance, but an alloy film containing both aluminum and copper.
磁控溅射离子镀铝膜不是简单的单质外接铝膜，而是铜和铝组成的合金膜。
At the same time, the method can avoid a craze problem caused by a thick covering layer, and increase extension plate utilization greatly combined with side extension growth.
同时，这一方法可避免覆盖层生长太厚的开裂问题，结合侧向外延生长可以大大提高外延片的利用率。
At least two thermosensitive sensors are arranged on the outer wall of each of the inner tubes, wherein at least one thermosensitive sensor is covered by a heat insulating covering layer.
内管的外壁上至少设置有两个热敏传感器，其中至少一个热敏传感器上覆盖有保温覆层。
But as experiment time increases, the effect of increasing friction for driving drum with concave covering-layer is decreased, and much lower than the driving drum with convexity covering-layer.
但是凹坑形仿生非光滑传动滚筒随着实验时间的增长，其增摩效果受到一定的影响，效果不如凸包形仿生非光滑传动滚筒。
But as experiment time increases, the effect of increasing friction for driving drum with concave covering-layer is decreased, and much lower than the driving drum with convexity covering-layer.
但是凹坑形仿生非光滑传动滚筒随着实验时间的增长，其增摩效果受到一定的影响，效果不如凸包形仿生非光滑传动滚筒。
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