Jacknut
起重螺帽(装在气缸体上, 拆卸时用)
🗣️ 情景例句
I took a month off for a holiday.
我休了一个月假。
Want of care does us more damage than want of knowledge.
粗心比无知更为有害。
When I present my views on the competitive products, I will refer to the patent situation.
专利的情况会在说明竞争产品时一并提出。