chemistry ingredients的用法和樣例：
例句
- Common results of such pollution are changes in the chemistry of the environment.
通常的結果是這些污染物改變了環境的化學組成。 - However, for attaching nonpressure parts to pressure parts, the filler metal chemistry shall match the nominal chemistry of the pressure part.
但將非受壓元件焊接受壓元件時所用的填充金屬，應與受壓元件的標稱化學組成相配。
