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

" But with all their flip-flopping and zig- zagging their real slogan should be, "Hype is on the way.

CNN: Pataki: 'Bush says what he means, he means what he says'

The pirates repeatedly attempted to reach the ship, firing at it with rocket-propelled grenades, but the Master performed zig-zag manoeuvres and successfully evaded boarding.

FORBES: Korean Ship Captain Honored for Extraordinary Bravery at Sea

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

BBC: Peddling in the old kingdom of bicycles