The motor and lens can get dirty or break alogether, and since many drives are proprietary(meaning non-standardized), they're expensive and difficult to replace.
The drive is purely electromechanical, which not only enables higher cycle rates(up to 50 cycles per minute) compared to pneumatics, but also reduces energy consumption.
其他驱动器是最重要的计算机图标。
And the other drives arethe most important computer icons.
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