The complexity of a towed air-launch system model mostly depends on the complexity of the towline model in this system.

拖曳式空中发射系统模型的复杂程度很大程度上取决于拖缆模型描述的复杂程度。

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The complexity of the model of a towed air-launch system mostly depends on the complexity of the model of the towline in this system.

拖曳式空中发射系统模型的复杂程度很大程度上取决于拖缆模型描述的复杂程度。

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The Delta IV Heavy has since completed several more successful lift-offs, while its next launch is currently planned from Vandenberg Air Force Base, California, USA, next month.

Delta 4型重型运载火箭之后又成功完成了更多次的运载任务，目前它的下一次发射定于下个月在美国加州Vandenberg空军基地进行。

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According to Allen and his partners, this air-launch-to-orbit system is far less expensive and far more flexible than traditional ground launches, which are still used by some private companies for satellite launches.

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