The analytical model of stiffness for angular contact ball bearing of aeroengine is established by the quasistatic analytical method.
通过拟分析方法,可以建立航发动机角接触球轴承分析模型。
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In 2018, Congress sought a standard like this by introducing the FAA Reauthorization Act, which in Section 577 called for minimum dimensions for passenger seats, including seat pitch as they are necessary for safety purposes.
2018 年,国会通过引入《联邦航空局再授权法案》寻求这样的标准,该法案第 577 条要求乘客座椅的最小尺寸,包括座椅间距,因为它们是安全目的所必需的。
Over the years, these extras have added up. JetBlue and Spirit, for example, have increased their overall revenues by several percentage points through these fees alone; and this has forced customers to decide with their dollar what they want.
多年来,这些额外的费用越来越多。例如,捷蓝航空和精灵航空仅通过这些收费就将总收入提高了几个百分点;这就迫使顾客用自己的钱来决定他们想要什么。
80. A determined European terrorist had a mission to transport an aerial missile via a privately hired cab to an airfield on the northern border of Denmark where he used a lunar shuttle system to directly launch the tremendous missile.
位坚定的欧洲恐怖分子有个任务,就是要将发航空导弹通过私人雇来的出租车运送到丹麦北部边界的个飞机场那里,在那儿(飞机场)他使用月球穿梭机系统来直接发射这枚巨大的导弹。