例句與造句

1. Production and degradation rates are expressed in numbers of molecules per time unit at unit concentration ( " x i " = 1 ).
2. In contrast to colchine and vinca alkaloids, paclitaxel enhances microtubule polymerization promoting both the nucleation and elongation phases of the polymerization reaction, and it reduces the critical tubulin sub-unit concentration ( i . e ., soluble tubulin concentration at steady-state ).
3. It's difficult to find unit concentration in a sentence. 用unit concentration造句挺難的