On this basis, the economy of this system during the operation was compared in detail with that of conventionalunit.
在此基础上，详细比较了该系统与常规机组在运行阶段的经济性。
2
Because these galaxies' mass is spread out over larger areas, they have far fewer stars per unit volume than do conventional galaxies.
因为这些星系的质量分布在更大的区域，它们每单位体积的恒星数量比传统星系要少得多。
3
A JDO transaction instance is the vehicle for carrying out a unit of work, according to the conventional definition of a transaction, against a persistence storage system (or database).