关于mbr的历史,英文媒体很多资料都指向一家叫dorr-oliver的加拿大公司——1960年代末1970年代初期,该公司基于平板超滤膜,研发了第一个侧流mbr,但通量只有17 l/(㎡·h)。...(i was born in tokyo and at that time the water pollution was very serious in japan. that's why i decided
first time in 2021, cobalt demand from electric vehicles overtook other battery applications to become...upward trend is expected to continue, rising by about 13% per year for the next five years.for the very