The author has established the mechanical model of O-chain iron and U-chain iron respectively, obtained the computing formula of load and stress, and contrasted with example.

本文分别建立了O形环与U形环的力学模型，推导出了载荷、应力分布的计算公式，并引用实例进行了对比分析。

youdao

A long iron chain was tied to the collar.

一条长长的铁链系在项圈上。

youdao

Establishments projects of tourism: iron chain bridge above the canyon, whirlybird tour project, water amusement, and geographic museum of glacier relics.

旅游建设项目：大峡谷铁链桥、直升飞机旅游项目、水上游乐项目和冰川遗迹地质博物馆。

youdao

The rusty iron chain that double-locked the cart to the front wheels of the cycle began to squeal as he rode.

NEWYORKER: The Elephant

The fundamental model we teach MBAs for thinking about manufacturing is the value chain, a simple model that describes the value adding steps that take a low value material like iron ore and turn it into a high value product like a Ferrari Testarossa.

FORBES: Sustainable Consumption Rising on the Business Agenda