4.2nm =_____cm =_______m

4.2nm =_____cm =_______m 1ml=_____cm的平方 30nm=___m 1nm= cm 1um= nm 1mm=?nm 36nm=()m 10.12mm=( )nm 1 nm =___m1 nm 等于多少m 1cm等于多少nm呢0.007cm=()nm 90gf.cm=?Nm 1nm=多少cm 1m=多少nm 1m=多少nm 154.6cm=多少nm? 1um=多少nm 0.1mm=几nm 0.1mm=（ ）nm