Relating to measurements or units of measurement derived from fundamental units of length, mass, and time.
绝对零度标定的度量或度量单位的, 从长度、质量或时间的基本单位而得出
The steam locomotives were superseded by diesel units.
蒸汽机车已被柴油内燃机车所取代。
This textbook has twenty units.
这本课本有二十单元。
