Delta ray
[电] σ射线
🧩 词语组成解析
delta
['deltə]
n. 希腊语字母表第四字母δ;（河流的）三角洲;[数]变量增量;
ray
[rei]
n. （热或其他能量的）射线;光束，光线;微量;伞形花序柄;
vt. 放射;照射;（思想，希望等）闪现;发光;
🗣️ 情景例句
There! You look very attractive.
天 你看起来真帅
If one side fails to observe the contract,the other side is entitled to cancel it.
如果一方不履行合同协议，另一方则有权终止合同。
In Maori history,the first traveller to reach New Zealand in the year 950 was a man called Kupe.
毛利人的历史上，于950年第一个到达新西兰的旅行者是一个名叫库佩的人。