“外露的”用英语怎么说？

作用在构架外露的结构物上的载荷,大部分是由拖曳载荷构成.The major portion of the loading on an open frame structure consists of the drag loading.采用的手法一些是精细的、一些是外露的.Some of these techniques are subtle and some are blatant.外露的垫片需用铝箔胶带密封.Exposed alumi...