... zone of low population density 少居民区，低人口密度区 zone of negative pressure负压区 zone of pollution 污染带 ...
2
?负压层
... zone of mobility 活动带 zone of negative pressure负压层 zone of opacity 不透明带; 不透明区; 不透明区域; 暗带; 暗区 ...
双语例句
1
Sometimes the negativepressure control system of boiler in power plant contains a strong nonlinear sector such as dead-zone which makes the system oscillate.