Datum plane
基准面\\n[化] 假设零位面
🧩 词语组成解析
datum
['detəm]
n. 数据，资料;[测]基点，基线，基面;论据，作为论据的事实;[数]已知数;
🗣️ 情景例句
The evening newspaper is cheaper than the morning paper.
晚报比早报要便宜。
Why are you crying?
你为什么哭？
Mr.Jones and his wife are looking at them.
琼斯先生和他的妻子正在看这些船。