Tasking under the joint urgent operational need includes installing BACN on two Bombardier BD-700 Global Express aircraft and two Global Hawk Block 20 unmanned aerial vehicles.

联合紧急业务需求订单包括在两架庞巴迪BD-700全球快车飞机和两架20座全球鹰无人机上安装战场机载通信节点（BACN）。

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But the European Commission has sought to block such joint inspections, contending the United States board has no right to inspect European firms.

但是欧洲委员会已经试图阻挡这种联合检查，声称美国委员会已经没有权利检查欧洲企业。

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The joint between the cylinder block and the head must be tight and able to withstand the pressure and heat developed in the combustion chambers.

气缸体与气缸盖之间的结合处必须保持密封，并且能够承受燃烧室产生的高压和高温。

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To keep Mr Abbas on the defensive, Hamas's leaders in Gaza have sought to block the joint programme he negotiated with Mr Meshal.

ECONOMIST: Israel and Palestine

In 2011, the AAR consortium attempted to block a drilling joint venture in the Arctic between BP and Rosneft through the courts.

BBC: BP sells TNK-BP stake to Russia's Rosneft

It also is part of a joint venture developing the first phase of Amazon's planned six-block headquarters.

WSJ: Weathering the Rain, And the Property Storm