The reduction of the noise and airflowpressure dropped in the fan of 4ZTL-1800 rice combine harvester threshing prior to cutting should be paid attention.
气吸式4ZTL-1800割前摘脱稻（麦）联合收获机的吸运风机的能耗和噪声一般都较大。
2
Instead of pumps, valves and human operators, the plant USES airflow, pressure changes and gravity to gradually cool the reactor.
这家电站没有使用管道、阀门和人工操作，而使用了气流、压力变化和重力来逐步冷却反应堆。
3
Below is a top-down view of an airflow analysis of the same design on an A320, with the associated pressure contours for an unmodified and modified fairing.