protraction

基本解释

• n.延伸；伸长；制图

同根派生

英汉例句

双语例句

• We see the conflict leading to a protraction of Libya’s oil shortages.
  我们看到冲突已经造成了利比亚石油短缺的进一步升级。
• Based on the analysis of distortion and protraction of warp and form of shedding, the problem that dobby can not fully develop its capacity is located.
  通过对开口时经纱变形伸长特性和开口形式的分析，指出了多臂机不能充分发挥效能的问题所在，并给出了解决办法。
• The importance of projection protraction CAI was introduced. The environment and flow of courseware CAI were discussed. Several problems that should be paid attention to were also pointed out.
  简要介绍开发工程制图CAI教学课件的重要性，重点论述开发CAI课件的环境和流程，指出了开发课件中应注意的几个问题。

词组短语

短语

• Protraction pattern 拖延型式迟滞
• protraction movement 前伸运动
• protraction Å 伸长
• maxillary protraction 前方牵引;上颌前牵引;上颌前方牵引;前牵引
• Low Protraction 低伸长

英英字典

柯林斯英英字典

• the act or process of protracting

专业释义

医药科学

• 前方牵引

  Objective To evaluate the maxillary protraction appliance permanent teeth combined rapid expansion of early bone anterior crossbite effectiveness.
  目的 评价前方牵引器联合快速扩弓矫治恒牙早期骨性前牙反牙合的有效性。

• 前伸

生物学

• 伸展；突出(retract之对)：