例句與造句

1. The tensile strength and young ’ s modulus of cf / ep specimens before and after vacuum thermo - cycling were measured by an electrical universal material testing machine . an electron scanning microscope was used to perform the surface morphology and fractography of specimens
   真空熱循環(huán)試驗前后cf / ep層合材料的拉伸性能由電子萬能材料試驗機完成,本文利用掃描電鏡觀測試樣表面形貌和拉伸后的斷口形貌。
2. It's difficult to find electron scanning microscope in a sentence. 用electron scanning microscope造句挺難的