Materials quantity variance
[经] 材料数量差异
🧩 词语组成解析
materials
[[mə'tiəriəlz]]
n. 材料；材料费；材料科学；材质（material的复数）
variance
['vɛəriəns]
n. 变化，变动;不一致;分歧;<数>方差;
🗣️ 情景例句
Many business people turn off their pagers and cell phones during their leisure time.
许多商人在他们的休息时间里都把传呼机和移动电话关掉。
Keep in touch.
再联络！
As the men refused to stop working, the police attempted to seize the pneumatic drill.
由于工人拒绝停下手中的活，警察想夺风钻。