x-ray machine前面用a还是an(x-ray设备操作需要什么证件)

x-ray machine前面用a还是an(x-ray设备操作需要什么证件)

首页维修大全综合更新时间:2024-11-15 03:50:43

x-ray machine前面用a还是an

前面用an,例如:

1.For the procedure itself, you stand in front of an X-ray machine specially designed for mammography. 

2.The invention relates to an x-ray machine which comprises an x-ray tube.

3.Haney said in 1988, an infant in a car seat went through an X-ray machine at the Los Angeles airport. 

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