Differential hardening
[机] 局部硬化
🧩 词语组成解析
differential
['dɪfə'rɛnʃəl]
adj. 差别的;特意的;[数]微分的;[机，物]差动的;
n. [数]微分;差别;工资级差;[机]差动器;
di, dif, divid 表示”分开”;”取消”,”否定”;”不同”
n. 硬化, 淬火\\n[计] 硬化, 固化, 淬火
🗣️ 情景例句
She was a beauty in her day.
她年轻的时候是个美人儿。
You're very cheerful today.
你今天很快活。
It is six o'clock.In the evening, the children usually do their homework, but this evening, they are not doing their homework.
现在是6点钟。晚上，孩子们通常是做作业，而今天晚上，他们没做企业。