例句與造句

1. The composition and properties of three types of titanium investment materials are examined by x - diffraction apparatus , hydraulic pressure tester and thermal expansion coefficient apparatus , respectively
   摘要應(yīng)用x射線衍射儀、液壓試驗(yàn)機(jī)和熱膨脹儀檢測(cè)國(guó)外三種體系鑄鈦專用包埋料的組成和性能。
2. It's difficult to find diffraction apparatus in a sentence. 用diffraction apparatus造句挺難的