pitch control节距: pitch; step调节: regulate; adjust; monitor; m ...节距调节器: twsit compensator叶轮叶片节距调节: impeller blade pitch adjustment叶片节距调节机构: blade pitch adjustment gear下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:节距调节，即可在微信中查询翻译
