全套管全回转式钻机
all casing and rotation drill
VN三分仓回转式
VN three partition rotary air preheater
半椭圆回转式井壁底
semiellipse rotation type
并列回转式开卷-卷取机
double-swiveling uncoiler and recoiler
冲击回转钻进
percussive-rotary drilling
percussive rotary drilling
impact rotary drilling
单滑片回转式压缩机
single vane rotary compressor
单叶回转式压缩机
rotary single-vane compressor
多管回转式干燥机
multi-tube revolving drier
多滑片回转式压缩机
multi-vane rotary compressor
多叶回转式压缩机
rotary multivane compressor
风罩回转式空气预热器
comparison of modification methods