Graduated cylinder(量筒)是一种常见的实验室量器,用于精确测量液体的体积。筒身上刻有均匀的刻度线,通常以毫升(mL)为单位。
/ˈɡrædʒuˌeɪtɪd ˈsɪlɪndər/
We used a graduated cylinder to measure 50 mL of water for the experiment.
我们用量筒量取了50毫升的水来做实验。
The teacher reminded students to read the graduated cylinder at eye level, aligning their line of sight with the bottom of the meniscus to ensure an accurate measurement.
老师提醒学生读量筒刻度时要平视,视线要与凹液面的最低处对齐,以确保读数准确。
Graduated 源自拉丁语 graduatus,意为"按等级划分的",其词根 gradus 意为"步、级"。在科学语境中,graduated 指带有刻度的。Cylinder 源自拉丁语 cylindrus,再往前追溯来自希腊语 kylindros,意为"滚筒、圆柱体"。两个词组合在一起,字面意思即"带刻度的圆柱体",形象地描述了这种量器的外形和功能。