Nato says Russia has agreed to begin talks immediately on a European missile defence shield, a project first put forward by Washington that has long caused friction.
北约称俄罗斯已经同意立即开始启动欧洲导弹防御盾牌的谈话，这个由华盛顿发起的项目引起了很长一段时间的争议。
Run out of Berlin with funds from the EU, the NEO Shield project, which will look for a way to protect earth from the space rocks, is expected to take three years to complete.
欧盟出资赞助的这一“小行星防护盾”项目从柏林起步，目标是寻找一种能保护地球免遭太空巨石撞击的方法，该项目预期将耗时三年完成。
With a practical project, authors state application status of the pipe jacking method in construction of contact tunnels of a subway shield zone tunnel.
从工程实例出发介绍顶管法在地铁盾构区间隧道联络通道施工中的应用情况。
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