protraction
伸长
常用释义
英音[ prəˈtrækʃ(ə)n ]
美音[ proʊˈtrækʃn ]
基本释义
- n. 伸长，延长；制图
例句
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1·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。
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2·It realizes graphics protraction of time and frequency domain in every time period.它实现了各个信号的时域和频域的图形的绘制。
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3·Results The new anchorage implants were stable almost in every protraction experimental study.结果在所有实验中支抗种植体稳定性良好。
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4·Result: The profile improved slowly more than half a year in maxillary protraction treated group.结果：前方牵引后侧貌改善较慢，一般需半年以上。
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5·To investigate the therapeutic effects of maxillary expansion and protraction in the primary dentition.探讨在乳牙期利用固定扩弓矫治器前牵引的临床效果。
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6·Based upon neural networks, a nonlinear mathematical model of the protraction for the die - bolt is developed.基于神经网络建立热膨胀螺栓形变的非线性数学模型。
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7·Based upon neural networks, a nonlinear mathematical model of the protraction for the thermal expansion die bolt is developed.基于神经网络建立热膨胀螺栓形变的非线性数学模型。
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8·The tape is used to prevent excessive protraction injuries, for example, shoulder problems from activities including playing tennis.这种贴布能防止过度拉伤，比如打网球等造成的肩膀问题。 。
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9·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。
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10·Conclusion vertical control was good in jaw bone and was not effective in dentition when applying maxillary protraction combined with rapid expansion.结论联合上颌前方牵引及快速扩大方法对颌骨垂直向控制较好，但对牙齿垂直向控制较差。
同义词
n.
伸长，延长；制图
同根词
词根：
protract
protracted
adj
拖延的
protractedly
adv
拖延地；延长地
protractor
n
伸肌；分度器；伤处异物摘出器
protracted
v
拖延；绘制；伸展（protract的过去分词）
protract
vt
绘制；延长；伸展