It's important to backout Beijing's wall in the capital's history.

拆除城墙是首都发展史上的重大事件。

Old wall had backout, the original site of wall built a round city road.

旧的城墙已经拆除，原来的墙址上修建了一条环城马路。

The old wall has backout, on the original place was extablished a city-round road.

旧的城墙已经拆除，原来的墙址上修建了一条环城马路。

It solved the problems of no evidence and experience dependence construction in installation and backout of formwork-supporting system for multilayer concrete structures.

解决了多层砼结构模板支撑系统的安装及拆除无依据、凭经验施工的问题。

In the total process of the construction project, the risk has an important influence on the life-cycle cost from the decision-making and the running phase to the backout phase.

在建设项目从决策设计到实施运行直到拆除的全过程中，风险对全生命周期的造价影响贯穿其中。

Some people think that we all the old houses entirely without any backout.

一些人认为保护就是把老建筑全体保留下来.

Hg backout CHANGESET: Undoes a specific changeset and creates a changeset that undoes that changeset.

hgbackoutCHANGESET：撤消特定的更改集并创建撤消此更改集的更改集。