Farmers thresh grain with threshing machines.农民用脱粒机脱粒.Nowadays most farmers use a machine to thresh their wheat.现在多数农民使用机器脱麦粒.In some villages farmers use a machine to thresh wheat.在一些村子里,农民用机器来打麦....
物质从热区转移至冷区有助于减少热失衡现象.Movement of matter from hot regions to cooler ones will tend to decrease the thermal imbalance.典型的除氧器都有加热区和除氧区.The typical deaerator has a heating and deaerating section.亨吉德山靠近冰岛首都雷克雅末克,这里因其地热区和生动的色彩...