With the X - frames projecting into the boxes, the transverse diaphragms were formed.把这些 X 框架放进这些箱体, 就成了横隔梁.The diaphragms may be flat or corrugated.膜片可以是扁平的,或是波纹的.These structures were usually skewed with the diaphragms...
A plane orbited over the landing field.有一架飞机在机场上空盘旋.How many spacecraft have orbited the moon?有多少艘太空船已经绕月球轨道运行过?The space shuttle orbited a communications satellite.航天飞机将一颗通讯卫星送入轨道....