1.長度單位1km=1000m1m=100cm1m=1000mm1km=0.6214mile1m=3.2808ft1ft=12in1in=2.54cm=25.4mm2.面積單位1hm2=10000m2=15畝=2.471acre1m2=10000cm2=10.7639ft23.容積單位1m3=1000L=220.09UKgal=264.2USgal1L=1000cm3=0.2201UKgal=0.2642USgal4.質(zhì)量單位1t=1000kg=20擔(dān)=2000斤=2204.61b1kg=1000...[繼續(xù)閱讀]