根据C形根管系统的解剖学特征判断其发生率。
The incidence of C-shaped root canal system is verdicted according to its anatomic features.
根管系统虽较为复杂，但主要是双根管和三根管型。
The root canal systems were comparatively complex, but most of them were most of double three canals.
目的：根管系统的复杂性使得完善严密的三维封闭根管系统成为根管治疗成功的难点。
Objective: It is difficult for three-dimensional sealing of root canal because of the complexity of the root canal system.
该案例表明一个不寻常的形态配置根管系统和补充以前的报告中存在这样的配置在下颚门牙。
The case demonstrates an unusual morphological configuration of the root canal system and supplements previous reports of the existence of such configurations in mandibular incisors.
但其究竟是如何促进愈合？根管冲洗液对病变组织的愈合有何影响？目前国内外尚未见较系统的研究报道。
However, there still lack of relatively systematic reports about the effect of root canal irrigation solutions on the repair of apical and periapical tissue.
对于强制循环系统，为了避免循环水动力的多值性，设计均要求在每一根水冷壁管设置节流孔板。
For the forced circulation system, to avoid the excessive values of circulation water dynamic, every water cooling tube must be mounted throttle plate in the design.
随着不定根内部的维管系统的发育，不定根从皮孔或下切口伸出。
With the development of the vascular systems in the adventitious roots, the roots extrude from the lenticel or the cutting callus.
此外，土壤质地、石砾多少、微根管材料选择、减少光系统对根系的干扰等也是影响微根管测定精度的因素。
Soil texture, tube material, and disturbance of light on root were also the factors affecting the precision of the method.
该系统采用单根文氏管、串联花环、丝网脱水器湿法除尘，取代原串联文氏管电除尘净化工艺。
In this system, single Venturi tube, floral hoop in series and wire mesh dehydrator are used instead of the dedusting process of electric precipitator and Venturi tube in series.
结果南方红豆杉根的次生结构由周皮和维管系统组成，次生木质部由轴向系统和径向系统两部分构成。
Results The secondary structure of the roots of Taxus chinensis var. mairei consisted of the periderm and vascular cylinder(stele). Axial and radial systems formed the secondary xylem of the roots.
这一系统主要是一根长管，称作消化道。
This system is mainly a long tube, called the alimentary canal.
应用显微根管超声技术清理、扩大根管，热牙胶充填系统进行充填根管。
Micro-ultrasonic technique was used to clean and expand the root canal, and warm vertical technique was employed to fill the root canal.
应用显微根管超声技术清理、扩大根管，热牙胶充填系统进行充填根管。
Micro-ultrasonic technique was used to clean and expand the root canal, and warm vertical technique was employed to fill the root canal.
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