英语词汇jackknife ruling pen怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	jackknife ruling pen
释义	jackknife ruling pen 简明释义扳开式鸭嘴笔专业释义 1 机械工程扳开式鸭嘴笔
随便看	evaluation principle evaluation procedure evaluation process evaluation processor module Evaluation,Program evaluation program evaluation project Evaluation,Qualitative Evaluation,Quantitative evaluation report Evaluation Reports evaluation research evaluation research corporation Evaluation Research,Nursing evaluation reserve Evaluation Review evaluation rule evaluations Evaluations,Drug evaluation sheet evaluation software Evaluations,Program evaluation stage evaluation standard evaluation standard criteria

英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。