| 1. | The negative pressure loop should be noted .
应该注意到负压的腹点。 |
| 2. | This negative pressure phase is of short duration .
负压周期的延续时间很短。 |
| 3. | Leak detection ; negative pressure wave ; wavelet transform
泄漏检测负压波小波变换 |
| 4. | Operated at sealed negative pressure and designed by gmp
密封负压操作，按gmp规范设计。 |
| 5. | Dust removal technology with negative pressure and its application
负压降尘技术及其应用 |
| 6. | Heat treatment equipment vacuum negative pressure nitrogen oven
热处理设备：真空负压氮化炉 |
| 7. | Automatic wash of negative pressure aspirator
自控负压吸引器的研制 |
| 8. | Mechanical pressure switch , changeover contact , negative pressure
机械压力开关，切换接点，负压 |
| 9. | Stress due to negative pressure
由负压引起的应力 |
| 10. | Application of high and low negative pressure drainage system in laowuji mine
高低负压瓦斯抽放系统在老屋基矿的应用 |
