一次沉淀浓缩池
Primary settling thickener
primary settling thicken- er
分步-均一沉淀法
Fractional homogeneous method
均一沉淀法
hom ogeneous precipitation
曝气沉淀一体化
integrated process of aeration and sedimentation
一次一密
once a key
one-time pad
one-time-pad
one-time key
one time pad
One-time password
different keys in each encryption
One-time One-password
one-time padding
一次一字符打印机
character-at-time printer
character-at-a-time printer
丙酮二次沉淀
two-steps acetone precipition
precipitate thea law two times witha cetone