例句與造句

1. This doubly charged ion has been made by accelerating the helium hydride ion to 900 keV, and firing it in to Argon.
2. Doubly charged ions of helium with noble gas atoms also exist including ArHe 2 +, KrHe 2 +, and XeHe 2 +.
3. It is particularly important for ion-exchange polymers ( also called ion-exchange resins ) : one equivalent of an ion-exchange polymer will exchange one mole of singly charged ions, but only half a mole of doubly charged ions.
4. It's difficult to find doubly charged ion in a sentence. 用doubly charged ion造句挺難的