chemical constituent的用法和樣例：
例句
- The chemical composites of photogelatin for flat screen stenciling are analyzed.
簡(jiǎn)要分析了平網(wǎng)制版感光膠的化學(xué)組分。 - The purpose of this work is to study systematically the chemical constituents and economical values of various parts in various plants of Paulownia.
本研究課題為系統研究泡桐屬各樹(shù)種各部位的化學(xué)組分及其經(jīng)濟價(jià)值。
