器械折断于上磨牙近颊根管和下磨牙近中根管者居多，占70.7%。器械折断在根管中下段多见，占70%。
Most of which happened in mesiobuccal canal of maxillary molar and mesial canal of mandibular molar, accounting for 70.7%.
reduce调用的结果存储在一个 B-Tree 中；数据在 B-Tree 中的位置距离根越近，汇总级别也就越高。
The results of the reduce call are stored in a B-Tree; the closer to the root the data is in the B-Tree, the higher-level the summary.
与近藤的研究相合作的林务局另外一项研究中，研究员摩根根·格鲁夫研究了巴尔的摩市中心犯罪率与草坪维护情况之间的关联。
Kondo o's study collaborates another forest service study conducted by researcher Morgan Grove on the link between lawn care and crime in downtown Baltimore.
计算结果表明，近地面处一根暴露于HEMP环境中的几十米长电缆，其外皮感应电流峰值一般可达上千安培。
The results show that the peak value of the HEMP induced cortical current in cables of several decameter length near the ground can reach kiloampere.
目的探讨在临床上上颌第一磨牙近中颊根第二根管(MB 2)的发现及扩通。
Objective To investigate the clinical discovery and expanding of the second mesiobuccal canal (MB2) in maxillary first molars.
目的研究上颌第一磨牙近中颊根第二根管的临床发现率。
Aim To investigate the clinical incidence of the second mesiobuccal root canal of maxillary first molars.
目的：统计分析下颌第一、第二、第三磨牙牙冠近远中宽度、牙体长度、分根情况以及相关因素。
Objective: Statistical analysis of mandibular molar mesiodistal crown width and tooth length and development of root.
输放装置包括导管头、内管、近端控制器、中管、导丝管、外保护机构、至少一根锁定丝和至少一根支架拉线。
The implanting device comprises canal head, inner pipe, close end controller, middle pipe, wire pipe, outer protection mechanism, at least one locking wire and at lest one bracket pulling wire.
结果：离体牙10颗，上颌第一磨牙近中颊根第二根管发现率为60%，通畅率为50%。
RESULTS: MB2 canal can be located in 60% and dilate 50% of 10 extracted maxillary first molars.
计算结果表明 ，近地面处一根暴露于HEMP环境中的几十米长电缆 ，其外皮感应电流峰值一般可达上千安培。
The results show that the peak value of the HEMP induced cortical current in cables of several decameter length near the ground can reach kiloampere. Some computational results are compared with the…
结果20例患者的24颗上颌第一磨牙中有14颗存在近中颊根第二根管，发现率为58。
Results Of the 24 maxillary first molars of 20 patients, 14 of the molars had second mesiobuccal root canals.
方法：选取40个下颌磨牙近中颊侧弯曲根管，随机分为两组，每组20个根管。
Method:40 curved mesial-buccal canals in mandibular molars were selected and divided into two groups randomly. Each group had 20 canals.
方法：选取40个下颌磨牙近中颊侧弯曲根管，随机分为两组，每组20个根管。
Method:40 curved mesial-buccal canals in mandibular molars were selected and divided into two groups randomly. Each group had 20 canals.
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