Root diameter
[机] 齿根直径, 螺旋纹底直径
🧩 词语组成解析
root
[rut]
n. 根，根源;原因，本质;祖先;[乐]和弦基音;
vt. 使生根;使固定;根源在于;欢呼，喝彩;
vi. 生根;根除;
🗣️ 情景例句
You were terrific!
真是太棒了！
You've already quoted a price of $ 800 per 1,000. Is there a discount for larger orders?
你报的价是每1000个要美金800元，如大量订购有折扣吗？
The doctor looked over James and asked the Shutes many questions.
医生给詹姆斯作了检查并问了舒特家人许多问题。