protraction [prəu'trækʃən]

protraction的基本解释

n.

伸长, 制图, 拖长

protraction的同义词

n. prolongation

与protraction相关的网络例句 [注：此内容来源于网络，仅供参考]

Materials And Methods 1, The animal model of Sprague-Dawley rat for maxillary protraction was made in this study, and an appliance based on the principle of protraction headgear was designed and made for maxillary protraction treatment which was hooked over the front of the zygomatic arch ,and a hole was made on the skull in the experimental group rat .

以面具式前牵引矫治器为原理制作特殊的前牵引支架，以外科方法安装支架挂在大鼠颧弓前端，在实验加力组大鼠头颅上打孔，安放挂钩，通过弹性牵引提供支架向前牵引的支抗。2、以该动物模型为基础，选用90只五周龄的Sprague—Dawley健康雌性大鼠作实验动物，随机分到实验加力组、正常对照组、手术对照组。

Part Two: 3-D Finite Element Method Study on Maxillary Protraction Objective: To explore the change rule of stress、 strain and displacement of craniofacial complex against different strength and direction of maxillary protraction, so as to provide the scientific basis for the selection of force system in clinical treatment.

第二部分上颌前牵引的三维有限元研究目的：探讨不同大小和方向的前牵引力对整个颅面复合体的应力、应变和位移变化规律，以达到为临床力系统的选择提供科学依据的目的。

The main results were showed as follows:Through screen and identification of morphology in M_2 and M_3, respectively, the mutants with mutative traits of plant were found. In which, 11 mutations were leaf variations, including light-green leaf, deep-green leaf, durative yellowish leaf, temporary yellowish leaf, inlaid yellowish leaf, wrinkly leaf, smooth-edged curly leaf, splitting-shaped curly leaf, peduncular-shaped leaf, round leaf and larger leaf, 12 were mutations on plant type, including excessive branches, lacking branches, highness, dwarf-like, erect posture, reclinate posture, strong stalk, slender stalk, tufty branches, wrinkled plant, purple stalk and hair-covered plant, 14 were flower variations, including dense flowers, light-yellow petals, white petals, white-mosaic petals, wrinkled petales, back-rolled petals, narrow petals, larger petals, smaller petals, apetalous flowers, variable-numbered petals, fertile pistil protraction, sterile pistil protraction and multi-anther, and 5 were physiologic mutants, including genic male sterile, cytoplasmic male sterile, bud-dead, and early and later bloom.

主要结果如下：通过田间M_2筛选和M_3重复鉴定，在田间农艺性状方面共获得浅绿叶色、深绿叶色、转绿黄化叶、持续黄化叶、边缘黄化叶、皱缩叶、光叶型卷叶、裂叶型卷叶、薹叶形叶、宽圆叶和大叶等11种不同的叶部性状突变体；同时还筛选到多分枝、少分枝、高杆、矮杆、株型紧凑、株型松散、粗茎、细茎、丛生分枝、整株皱缩、紫茎、整株被毛等12种植株性状突变体，密花、浅色花瓣、白色花瓣、白斑花瓣、皱瓣、卷瓣、窄瓣、大瓣、小瓣、无瓣、花瓣数目不定、可育型柱头外露、不育型柱头外露和多雄蕊等14种花器性状突变体，以及细胞核雄性不育、细胞质雄性不育、死蕾、早花和迟花等5种生理性状突变体。

与protraction相关的网络解释 [注：此内容来源于网络，仅供参考]

protraction：伸长

protractile 伸出的 | protraction 伸长 | protractor 量角器

protraction：前伸

protracted labor 滞产 | protraction 前伸 | protrusion 伸出

protraction：延长;伸展;拖长;绘制

protracted 延长的 | protraction 延长;伸展;拖长;绘制 | protractor 量角器

protraction：延長;製圖

原型反應器 prototype reactor | 延長;製圖 protraction | 延長劑量 protraction dose

Rear Protraction：后伸

前伸 Front Protraction | 后伸 Rear Protraction | 接近角 Approach Angle