Petscheckite
铌钽铁铀矿
🗣️ 情景例句
I need to get out more.
我需要多出门去。
Foam plastics are applied to protect the goods against press.
泡沫塑料用来防止挤压。
This time they fixed heavy metal clamps to both sides of the dish so that they could fasten the chains.
这次，他们用沉重的金属夹子把盘子夹住，以便往盘子上安装铁链。