The physical model of cantilever board in bench blasting is firstly presented and based on the hypothesis, a formula for calculating the charge weight in the MS delay bench blasting is also derived.

首先提出台阶岩体爆破的悬臂薄板物理模型，并在此基础上建立了台阶多排微差爆破的炸药量计算公式。

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Some problems such as long delay and multi-beams exist in the design of on-board route switching system.

在星载路由交换系统设计过程中，存在长时延、多波束等问题。

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JetBlue Airways Corp. had six diverted planes on the ground, and jetBlue officials said all its captains were acutely aware of the tarmac-delay rule, which threatens heavy fines on airlines if they keep passengers on board grounded domestic flights for more than three hours (four hours for international) without offering a chance to deplane, with certain exceptions.

WSJ: How Snow (and Libyan Soldiers) Led to Airport Logjams

Not only is the delay a pity, it will also mean more budgetary squeezes and a longer wait before on-board science can begin and hence more pressure to do some of it on Mir instead.

ECONOMIST: Rocket science