type genus of the family Ulvaceae; green seaweed having a thallus two cells thick: sea lettuce
造句
用作名詞(n.)
Studies on the chemical constituents of Ulva lactuca L. 石莼的化學成分。
Results show that Ulva P.K.Can uptake ammonia,nitrite,nitrate and phosphorus simultaneously.Ammonia removal is efficient,but the changes of COD is minimal. 結果表明，孔石莼能同時吸收水中的三氮和磷酸鹽，尤其對氨氮有極強的吸收作用，但對有機物的去除不明顯。
近義反義詞
ulg
U
Ulinasastin
Ulyanitskiy
U-process
U Wing Aung
ullage foot
Ulumination
Ueda Teruya
ubling dose
UAV landing
Uwe Dassler