短語(yǔ)詞組短語(yǔ)chemical l symbol 化學(xué)記號(hào)Chemical Symbol Magnetic Label 化學(xué)記號(hào)符號(hào)磁貼板Chemical symbol based designation system 用化學(xué)符號(hào)表示命名系統(tǒng)the chemical symbol for water 水的化學(xué)符號(hào) 返回 chemical symbol