Hondrometer
粒度计, 微粒特性测定计
🗣️ 情景例句
Sometimes, at night,
有时候， 在夜晚，
My favorite holiday is Christmas.
我喜欢的节日是圣诞节。
Please be aware that this is a crucial issue to us.
请了解这一点对我们至关重要。