?的意思：化學(xué)的

的用法：作為形容詞，用于描述與化學(xué)相關(guān)的事物或現(xiàn)象。

例句1：Chemical reactions occur when two or more substances combine to form new substances.（當(dāng)兩種或更多物質(zhì)結(jié)合形成新物質(zhì)時(shí)發(fā)生化學(xué)反應(yīng)。）

例句2：The chemical properties of a substance determine how it will react with other substances.（物質(zhì)的化學(xué)性質(zhì)決定了它與其他物質(zhì)如何反應(yīng)。）

例句3：The laboratory is equipped with all the necessary equipment for conducting chemical experiments.（實(shí)驗(yàn)室配備了進(jìn)行化學(xué)實(shí)驗(yàn)所需的所有設(shè)備。）

例句4：Chemical analysis is used to identify the composition and structure of unknown substances.（化學(xué)分析被用來(lái)確定未知物質(zhì)的組成和結(jié)構(gòu)。）

例句5：Many household cleaning products contain harsh chemicals that can be harmful to human health.（許多家庭清潔產(chǎn)品含有對(duì)人體健康有害的強(qiáng)烈化學(xué)物質(zhì)。）

同義詞及用法：

- Chemistry: the scientific study of the properties and behavior of matter （科學(xué)研究物質(zhì)性質(zhì)和行為的領(lǐng)域）

- Chemical compound: a substance formed by the chemical combination of two or more elements （由兩種或更多元素通過(guò)化學(xué)反應(yīng)組成的物質(zhì)）

- Chemical element: a pure substance that cannot be broken down into simpler substances by chemical means （不能通過(guò)化學(xué)手段分解為更簡(jiǎn)單物質(zhì)的純物質(zhì)）

- Chemical formula: a combination of chemical symbols and numbers used to represent the composition of a substance （用化學(xué)符號(hào)和數(shù)字組合表示物質(zhì)組成的方法）

- Chemical reaction: the process by which one or more substances are changed into different substances （一種或多種物質(zhì)被轉(zhuǎn)化為不同物質(zhì)的過(guò)程）