工厂的维修人员已认识到，一个总的集中空气过滤装置不可能始终高效率运转，其滤芯更换周期会引起压缩空气质量的变化。
It has been recognized that a centralized air filter is not running at high efficiency at all times or its cleaning cycles cause variation to the quality of pressurized air.
便携式和固定式吸式表和控制展台尺寸多样化，对烟、雾和灰尘进行高效率的收集和过滤。
Diverse lines of portable and stationary downdraft tables and control booths of varying sizes for fume, mist and dust collection provide highly efficient collection and filtration.
在编制遥测数据处理软件的过程中，面对大量的测试数据，经常需要编写高效率的数据过滤器。
In the programming of telemetry software, a data filter is necessary to deal with lots of test data.
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