The analytical model of stiffness for angular contact ball bearing of aeroengine is established by the quasistatic analytical method.
通过拟静力

方法,可以建立航
发动机角接触球

刚度
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
局再授权法案》寻求这样
标准,该法案第 577 条要求乘客座椅
最小尺寸,包括座椅间距,因为它们是安全目
所必需
。
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.
一位坚定
欧洲恐怖分子有个任务,就是要将一发
导弹通过私人雇来
出租车运送到丹麦北部

一个飞机场那里,在那儿(飞机场)他使用月球穿梭机系统来直接发射这枚巨
导弹。
版高中英语(必修5) 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
费用越来越多。例如,捷蓝
和精灵
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
钱来决定他们想要什么。
中英语教室:高级版——彭蒙惠英语(2024年)