The heavy traffic tinctures the air with carbon monoxide.
繁忙的交通使空里充满一化碳。
The heavy traffic tinctures the air with carbon monoxide.
繁忙的交通使空里充满一化碳。
Qualified nickelous, sulfate, nickelous nitrate and nikel monoxide were prepared with waste raney nickel catalyst as raw material.
以废雷尼镍催化剂为原料,制备出合格的硫酸镍、硝酸镍和化镍。
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