n.试剂
reagent的复数

原形：reagent复数：reagents

The reagent used in this chemical reaction is hydrochloric acid.
这个化学反应中使用的试剂是盐酸。
The biologist added a drop of a special reagent to the blood sample.
生物学家向血液样本中添加了一滴特殊的试剂。
The reagent was carefully measured to ensure accurate results.
试剂被精确地测量以确保结果的准确性。
The chemist mixed the reagent with the solution to initiate the reaction.
化学家将试剂与溶液混合以引发反应。
The reagent turned the solution blue, indicating the presence of copper ions.
试剂使溶液变蓝，表明存在铜离子。
The reaction was catalyzed by a small amount of a catalyst reagent.
反应由少量催化剂试剂催化。
The reagent used for DNA extraction is usually a combination of sodium dodecyl sulfate and proteinase K.
用于DNA提取的试剂通常是十二烷基硫酸钠和蛋白酶K的组合。
In a titration, the reagent is slowly added until a specific endpoint is reached.
在滴定中，试剂缓慢添加直到达到特定的终点。
The reagent was stored in a dark bottle to prevent degradation from light exposure.
试剂存放在深色瓶中，以防止因光照而降解。
The reagent kit includes all necessary components for performing the test.
试剂盒包含了进行测试所需的所有组件。