The zig-zag cladding is repeated internally, with a self-bracing zig-zag exposed frame.

曲折的包层在内部重复，带有自支撑的曲折明框。

youdao

Analyzes the over-safety caused by zig-zag devices, putting forth the principle of zero-torque in designing fuze zig-zag devices and the specific measures for the implementation of the principle.

分析了引信曲折槽保险机构过保险的原因，提出了引信曲折槽机构设计的零扭矩原则及实现该原则的具体措施。

youdao

(...) Kim says North Korea's timing on the warning is part of the North's unique zig-zag strategy.

VOA: standard.2009.10.15

About 60 schools have the Keep Clear road signs with zig zag markings, while a few others have yellow lines with loading bans or pedestrian crossings with white zig zags, the council said.

BBC: Coldean Primary School poster

And from there continue south, zig-zagging through ancient small streets with traditional courtyard residences.

BBC: Peddling in the old kingdom of bicycles

Those who choose the slope hop and zig-zag across and down, as if they're skiing.

CNN: Romancing the dune in Namibia