名词真空; 真空度; 真空状态; 空洞
1. 真空吸尘器：MICROWAVE 微波炉 | VACUUMS 真空吸尘器 | DIGITAL CAMERA ACCES 数码相机附件
2. 真空：氣體力學 Mechanics of gases | 真空 Vacuums | 氣體運動 Motion of gases
3. 吸尘器：Microwaves -微波炉 | Vacuums -吸尘器 | Cooling, Heating, Air -空调
1. The effort is also designed to avoid the power vacuums that usually accompany a shift in administration.