Features a diaphragm for cleaner, quieter operation.

具有使操作更加清洁、安静的隔膜。

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Both units include a 2 - by 9-inch feed opening; a new waste-evacuation, dust-collection system; and a new cabinet for quieter operation.

两个机器都包含了2 - 9英寸加料口，还有个废纸处理器、灰尘处理系统、和一个新的消音装置。

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In testing, the vehicle has also been able to get closer to animals within the game park due to its much quieter operation.

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Alyssa Mastromonaco, the director of scheduling and advance, who had also worked for Kerry in 2004, said that she had some trouble getting used to the quieter vibe of the Obama operation.

NEWYORKER: Battle Plans