弓

To decide the direction of the screw of AF system with the angle relation between spinous process and pedicle of vertebral is a valid idea.

利用棘突与椎弓根在影像上的角度关系确定椎弓根螺钉方向，是术中椎弓根螺钉定向的有效方法。

In the mid-1980s Hoyt Archery introduced the latest in a series of materials innovations, a take-apart bow with a core made of syntactic foam a material composed of tiny glass beads embedded in a rigid foam matrix and wrapped in layers of carbon fibers and fiberglass.

但之后箭弓的材料和制作工艺发生了深刻的改变，HOYT ARCHERY公司引进了最近技术进行材料革新，制成了一种新型"拆分式"箭弓。这种箭弓的内芯是用合成泡沫材料做成的，外层裹以数层碳纤维和玻璃纤维。

The spark-gap phenomenon is the main RF noise source of electrical railways, which happens when the pantograph-catenary is disconnected transitorily.

模型由离线事件模拟器、放电电压条件判决器、触发源等模块组成，将机车车速、定位点跨距、弓网接触压力、受电弓质量、离线概率等诸多因素作为仿真的输入参数，能反映出机车运行时弓网间电火花噪声的动态变化。

An organ or structure having a curved or bowlike appearance, especially either of two arched sections of the bony structure of the foot.

足弓，齿弓具有弯曲的或弓状外形的器官或结构，尤指脚的骨架结构的两个弓形部分之一

Anatomy An organ or structure having a curved or bowlike appearance, especially either of two arched sections of the bony structure of the foot.

足弓，齿弓：具有弯曲的或弓状外形的器官或结构，尤指脚的骨架结构的两个弓形部分之一

The MPR was used to measure the height and width of posterior arch in the point of vertebra artery overpass, the height of lateral mass benenththe posterior arch and the height and width ofC2 interarticular isthmus.

结果 寰椎椎动脉沟处后弓高度为4.54±1.17mm，椎动脉沟处后弓宽度为8.69±1.12mm，寰椎后弓下侧块高度为4.98±1.07mm，枢椎峡部高度6.95±2.24mm，枢椎峡部宽度6.75±1.39mm，男、女2组之间没有统计学差异。

Change of arch width after extraction and nonextraction treatment;2. Effects on arch width after extraction and nonextraction treatment;3. Intercanine and intermolar arch widths and anterior arch depths of the maxillary and mandibular arches were measured.

结论与不拔牙矫治相比，拔牙矫治不会减小尖牙间牙弓宽度和前牙段牙弓长度而影响面部美观；但拔牙和不拔牙矫治都能引起磨牙间牙弓宽度的改变，可能影响疗效的长期稳定性。

While for some indexes,such as length of medial longitudinal arch,length of lateral longitudinal arch,height of first metatarsophalangeal articulations,there is no longer changing with increasing load after adapting to a relatively lighter load.There is marked difference on the foot shapes between different items youth track man,especially for the throwers.Finally,five dimensions of foot morphological characteristics were found to establish the foot-shape-index-system,which are respectively metatarsophalangeal index,heel index,ankle index,arch of foot index and length of foot index,including 15 items.

更多载荷变化的影响；我国青年田径运动员的内侧纵弓长、外侧纵弓长、第一跖趾高、足背高、拇趾偏角、足跟面积等指标在一定载荷范围内变化明显，但超过承重范围则不再因载荷增大而变化；不同专项的青年田径运动员的足部外形指标间存在明显差异，以投掷项目运动员的差异最为突出；足长度指标、跖趾部指标、足弓部指标、足跟部指标、足踝部指标共15项内容为代表我国青年田径运动员足部外形特征的指标体系。

In this paper the authors make use of the linear relation between the rising angle and the rising height of the pantagraph and have got a terse equivalent mass formula of the TSG 3 pantagraph.

利用升弓角与升弓高之间的线性关系推导出了较为简洁的TSG3受电弓的归算质量计算公式，经过与实测结果对比，理论值与实测值非常吻合。

Results 36vertebra of12cases all display a canalis composed of corpus vertebra,pediculus,lamina arcus vertebra and processus.8cases with11arcus vetebras applied reversal gantry angle were diagnosed as spondyloschisis.

结果 经反角度扫描12例共36 椎弓均可显示由椎体、椎弓根、椎弓峡部、椎板及棘突构成的骨性椎管。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。