例句與造句

1. In spirit of a Wien filter a combined magnetic, electric quadrupole is achromatic around a given velocity.
2. Besides allowing the use of sources others than gallium, these columns can switch from different species simply by adjusting the properties of the Wien filter.
3. A secondary ion mass spectrometer consists of ( 1 ) a primary ion gun generating the primary ion beam, ( 2 ) a primary ion column, accelerating and focusing the beam onto the sample ( and in some devices an opportunity to separate the primary ion species by Wien filter or to pulse the beam ), ( 3 ) high vacuum sample chamber holding the sample and the secondary ion extraction lens, ( 4 ) a mass analyser separating the ions according to their mass to charge ratio, and ( 5 ) a detector.
4. It's difficult to find wien filter in a sentence. 用wien filter造句挺難的