Dialkyl alkylene diphosphonic acid

[化] 亞烷基二烷基雙膦酸

?? 詞語組成解析

dialkyl
[機] 二烷基
alkylene
亞烴基, 烯化, 烷撐
acid ['?s?d]
adj. 酸味的;尖刻的;酸的;酸性的; n. <化>酸;酸味物質;
acid尖，酸，銳利 →酸；酸的，酸性的

??? 情景例句

It's about the size of the United States, but it has a population of only 16.5 million.
它和美國一般大，但人口卻只有一千六百五十萬。
How many of these are you going to buy her?
你要買多少給她？
Beyond two or three days, the world's best weather forecasts are speculative,
世界上最好的兩三天以上的天氣預報具有很強的猜測性，
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