The author approvingly quotes a British philosopher, Herbert Spencer, who said that “the ultimate result of shielding men from the effects of folly is to fill the world with fools.”
他很赞同一个英国哲学家——赫伯特•斯宾塞——曾说过的话：人们竭力远避愚蠢行径的影响，最终反而使得世上尽是愚蠢之人。
One-part implant widely used for osseointegrated artificial lower limb attachment would lead to osteoporosis caused by stress shielding after a long time of implantation, and result in failure.
应用于植入性下肢假肢的骨植入体多为一段式结构，长期使用下产生的应力屏蔽效应容易引起骨质疏松，继而导致植入体植入失败。
Reality shielding thickness accord with the demands of radiation protection by comparing with calculation result of shielding thickness.
并与实际屏蔽厚度进行了对比，得出了实际屏蔽厚度均符合辐射防护要求结论。
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