形形色色
air-condition ventilation conduit management
all sorts of
all kinds of
形形色色的风力机
The Variety of Wind Turbine
热解气相色谱谱图
pyrolysis gas chromatographic spectrum
矩形-圆形波导转换器
rectangular-circular waveguide transducer
永磁圆盘形耦合电机
disk-shaped permanent magnet coupling machine