For the roof assembling technique under ground was complex and the integral lifting was high difficult, much challenge was placed on the quality and safety supervision.

屋盖在地面组装工艺复杂，整体提升难度大，质量安全监督方面面临挑战。

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And the platform mainly consists of two swing mobile robots and one ground mobile robot with the accessory assembling and machining in industry as the simulation object.

该平台以实际工业生产中的零配件装配加工为模拟对象，主体部分由双悬挂移动式多关节机器人和一个地面移动式多关节机器人组成。

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He said the process of assembling the evidence showing that his clients were actually at ground zero, or were exposed to toxins, has been challenging and time-consuming.

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Extell acquired a 99-year ground lease on the site in August 2011 and is assembling air rights for the 725, 000-square-foot building from a nearby church and from the city.

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General Dynamics currently has 5, 000 engineers and draftsmen at work in and around Groton designing the next generation of ballistic-missile subs, and an additional 2, 000 tradesmen assembling Virginia-class attack subs, so the town is on firm ground in calling itself the submarine capital of the world.

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