class improvement plan船级: ship's classification; ship' ...改进: improve; make better; better ...计划: plan; project; programme; de ...改进计划: improvement plan产品改进计划: product improvement plan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:船级改进计划，即可在微信中查询翻译
