The structural upgrade consisted of converting the multiple arch to basically a gravity structure by partially infilling the arch bays with conventional concrete.

这座大坝的改造升级，采用方法是用普通水泥浇筑拱槽，把基本上是重力结构的大坝部分改建为多拱大坝。

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The threshold of no damage is project specific, but can quite probably be significantly higher than 0.3 g for properly designed and constructed concrete gravity and arch dams.

不遭受毁坏的的限度是因不同大坝工程而异，但是在设计和建筑大坝时最好把可能的限度定为0.3g。

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Dr Kwan also predicts that people will have thicker eyelids and a more pronounced superciliary arch (the smooth, frontal bone of the skull under the brow), to deal with the effects of low gravity.

坤博士同样预测，人们将有更厚的眼皮和更明显的眉骨(眉毛下光滑的额骨)，来解决低重力的影响。

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