Depth of thread
[化] 螺纹深度
🧩 词语组成解析
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];
thread
[θrɛd]
n. 线;线索;线状物;螺纹;
vt. 穿成串;将（针、线等）穿过…;用…线缝;给…装入（胶片、狭带、绳子）;
🗣️ 情景例句
about your math teacher or your math homework.
你的数学老师或你的数学作业。
He was accustomed to poor food.
他习惯于粗茶淡饭。
I saw him playing football on the playground.
我看见他在操场上踢足球。