Coefficient of drag
阻力系数
🧩 词语组成解析
coefficient
[,koɪ'fɪʃnt]
n. 系数;（测定某种质量或变化过程的）率;程度;协同因素;
adj. 共同作用的;合作的;
co共同+ef出+fici做+ent...的 → co共同+efficient做出来=有效的 → 一起有效的 → 系数
of
[əv]
prep. 关于;属于…的;由…制成;
aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气];
drag
[dræg]
vt. 拖拽;吃力地往前拉;拖地而行;
vi. 沿地面拖动;落后;缓慢前进;打捞;
n. 拖，拉;累赘;阻力;
🗣️ 情景例句
We need a man who knows the ropes.
我们需要位内行人士。
What's your nationality?Are you a Chinese?
你的国籍是什么？你是中国人?
Most of them were able to climb out in time. However four men were not quick enough to escape the flames.
大部分工人能够及时逃生。可是有4个工人来不及逃离火场。