Photoelastometry
光测弹性术
🗣️ 情景例句
That's load off my mind.
这一来我心里轻松了。
The devil is good when he is pleased.
魔鬼高兴，也发善心。
and the profits from the exhibition were used to build museums and colleges.
博览会的赢利用来建造博物馆和高等学校。