The iron core is used to maximize the coupling between the coils (formed by conductors) placed on the stator and rotor, to increase the flux density in the machine and to decrease the size of machine.

铁芯用于使放置在转子和定子中的线圈（由导体构成）之间的耦合最大，以增加电机的磁通密度以及减小电机尺寸。

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The first reading machine was the size of a washing machine.

第一台阅读机的体积和洗衣机一样大。

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A standard chemistry lab's NMR machine approaches the size of a file cabinet, but the new device is only about as big as a coffee cup.

化学实验室里标准大小的核磁共振机和一个文件柜差不多，但新做成的这微型核磁共振机和一个咖啡杯差不多大。

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But the Osborne One was about the size of a sewing machine and weighed twenty-four pounds.

VOA: special.2011.02.15

He has shrunk the electronics dramatically, from a cart the size of a washing machine to just a computer and something the size of a DVD player.

FORBES: Technology

The ATM allows banks to reduce an entire bank branch into the size of a machine.

CNN: Valet parking, robot style

The two Grail probes, called Ebb and Flow, were each about the size of a washing machine.

BBC: Nasa reveals new information about moon probes crash sites