The engine would have used loops of Jacquard's punched CARDS to control a mechanical calculator - the forerunner of today's methods of computer programming.

这种分析机本来会用成串的雅卡尔打孔卡控制一只机械计算器——今日计算机编程法的先驱。

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But it remains hard to shrink engines, batteries, mechanical actuators and control electronics to the point where they are small and light enough to fly without impairing their performance.

不过，要缩小这些飞行引擎、电池、机械促动器、中控电子装置，以使这些飞行器够轻够小地完美飞行，还是相当困难。

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These involve changes to the lithium chemistry of batteries, their mechanical properties and the electronics that control them.

这将改变电池的化学成分、机械特性以及控制电路。

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He therefore wondered if he could use EEG-based control to operate a set of mechanical legs.

ECONOMIST: Bionics (I)

The fine-grained control that the command software enables combined with a design that is more electrical than mechanical creates enormous flexibility in how the different systems can be coordinated.

FORBES: For Radical Innovation, Nature Loves A Vacuum