This alloy is a bit tricky as it sometimes may harden in the first twenty four hours after casting, becoming almost brittle, and produce cracks in the grid frames, etc.是什么意思_This alloy is a bit tricky as it sometimes may harden in the first twenty four hours after casting, becoming almost brittle, and produce cracks in the grid frames, etc.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句