Panels a, b and f and crossbar h with aircraft-grade aluminum?

嵌板A B F和横木H都换成航空铝？

And everything is connected using these crossbar switches, which are bus systems.

一切都使用些交叉开关，些交叉开关是总线系统。

The center crossbar is to extend from end to end at the middle of the frames.

板腰间的中闩要从一头通到一头。

They made the center crossbar so that it extended from end to end at the middle of the frames.

使板腰间的中闩从一头通到一头。

Other writers have learned the basics while serving in the Navy, working in steel mills, or doing time in America's finer crossbar hotels.

外有些家是在海军军营里、炼钢厂里，或是在美国精美的铁窗宾馆里熬日子的时候学会了的基本技巧。

Overlay the frames with gold and make gold rings to hold the crossbars. Also overlay the crossbars with gold.

板要用金子包裹，又要板上的金环套闩，闩也要用金子包裹。

They overlaid the frames with gold and made gold rings to hold the crossbars. They also overlaid the crossbars with gold.

用金子将板包裹，又板上的金环套闩；闩也用金子包裹。

By the time she reached the gate the boy was sauntering down the road, whistling carelessly; but she saw that a letter had been thrust between the slats and the crossbar of the gate.

当她到达门口时， 男孩已经在路上闲逛， 漫不经心地吹着口哨。但她看到一封信被塞进了大门的板条和横梁之间。