Bd ft
abbr. board foot 板英尺（木材体积单位）
🧩 词语组成解析
[计] 空白显示, 框图, 布尔差分
n. 英尺
🗣️ 情景例句
It's me, Grandpa.
是我， 爷爷。
Sometimes it's nice just to sit around and do nothing.
偶尔坐着无所事事，也算是赏心乐事。
so every so often a sample is obtained with a coring bit.
因此时常要用取芯钻头取样。