矫直的叶片对于减少上游直管的要求长度是有效的.Straightening vanes are effective in reducing the upstream pipe - length requirement.原住民的生长激素缺乏症矫直机是在2000年外国人,并倡导功能.The aboriginal GHD straightener was alien in 2000 and had advocate features.本机组采用...
1970年，法国农场的平均规模为19公顷。In 1970 the average size of a French farm was 19 hectares.他有将近1,000公顷的草场和耕地。He had nearly a thousand acres of grazing and arable land.每年都有几千公顷的森林遭到破坏。Thousands of hectares of forest are destroyed eac...