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...
The mends were almost invisible.补好的地方几乎看不出来.A plumber is a person who fits and mends the plumbing.管子工是安装和修理水管的人.The mends on your coat were almost invisible.你外套上的补钉简直看不出来....