问题
名词解释
空化作用
答案
参考答案:
是指超声波在组织中传播时,引起介质和细胞内气体分子、气泡的振动,气泡随之受到破坏而形成空隙或空囊。空化作用是超声导人作用的最重要机制。
空化作用
参考答案:
是指超声波在组织中传播时,引起介质和细胞内气体分子、气泡的振动,气泡随之受到破坏而形成空隙或空囊。空化作用是超声导人作用的最重要机制。
用方框中所给单词的适当形式填空。
2. Look! The monkey is _____ the floor. 3. They are all _____ in English. 4. Is Lingling _____ lanterns? 5. They aren't _____ the house. They are cleaning the house. 6. I think it's _____ to learn English well. 7. Jiaozi means _____ in English. 8. People think red can bring us good _____. 9. _____ Day is on December 25th. 10. Look! Mr. Wang is _____ the doors and windows black. |