无选择的

It is necessary to discuss some aspects such as pathogenesy,naturnal results,influencing factor,therapeutic principle and the opportunity of treatment.

有必要就无症状胆囊结石的发病机制、自然转归及其影响因素、治疗原则及治疗时机的选择进行探讨。

This resuit may be related to differences in selection pressure exerted on species by their habitats with different distribution ranges.

说明在大尺度上遗传距离与地理距离相关而在小范围内则无上述关系，该结果可能与位于不同分布区内的物种所承受的生境选择压力不同有关。

Based on these models, it describes the selection of them and methods of how to determine scaleless range.

根据该模型分别描述了模型的选择问题和无标度区的确定问题。

STUDY SELECTION: The documents were examined at first to exclude the study on non-healing mechanism. Full texts were found in the surplus documents. The inclusive criterion was the foundational experiment on the mechanism of scarless healing.

资料选择：对资料进行初审，筛除非愈合机制的研究，对剩余的文献查找全文，以相关无瘢痕愈合机制基础实验作为纳入标准。

Sugarless chewing gum would be an obvious choice for both dietary and cavity control points of view.

无糖口香糖将是一个明显的选择，既提供饮食和腔控制的观点。

Such background dreams lie dormant or unanimated until creator chooses to include or add them to the template of their dream for a particular cycle.

这些后台梦想处在静止或无激活状态，直到造物者为了一个特定的周期去选择把它们包含或加载进他们的梦想模板。

At present, the valveless hydraulic drill is wildly used in many fields. Comparing with the development of the abroad and analyzing the native practice, we take the valveless hydraulic drill that hasn't formed mature theories as the object and make the study with the technology of computer imitation. The main contents of the study are as follows. 1.The accumulators of the hydraulic drill have been carefully analyzed and studied.

目前，液压冲击机械在各个行业中得到迅速推广应用，本文在研究国内外现状的基础上，选择在国内仍处于开发阶段，设计理论还不是很成熟的无阀液压凿岩机为研究对象，运用计算机仿真技术对其进行了研究，主要内容如下：1。

Icannot write as a novelist because my written skillhasdevolved after several years' pause (cursed is the most evil Chinese collegeentrance examination, I always regret to death why I have chosen the sci-tech direction), my photography skill is nobetter thanmy piano, violin, guitar, painting and a lot more other things, which are allatmerely amateur-level. I am best at "knowing something of everything" and stilldevote myself to it, therefore I am yeta master of nothing.

本人虽不才，写作功夫已因多年不练笔而稍有退化（万恶的中考高考——灰常后悔当初为何选择理科班），摄影和我的钢琴提琴吉他绘画及许多其他一样只能算得了业余（本人深喑&什么都知道一点儿&之道且乐此不疲，故目前仍无一技精通）。

Methods To observe 110 primiparas of 37～40 weeks' pregnancy,head presentation,who can deliver vaginally with distending the vagina and new protecting perineum method but not with perineal lateralis,and compare with the 108 primiparas with traditional protecting perineum method.

选择孕37～42周，经阴道自然分娩，无会阴侧切指征的单胎头位初产妇110例作观察组，在助产中用扩张阴道和改良托肛加指法保护会阴；以往用传统托肛法保护会阴的108例作对照组。

Methods:DNA was extracted from tissues of HCC and amplified by PCR.MI was determined by using seven microsatellite markers and mutational ana lyses of IGFⅡR by running sequencing gel electrophoresis.

用QIAamp方法提取肝细胞癌DNA，选择7对引物，经PCR扩增，走DNA序列胶电泳，测定其MI的阳性率及有无IGFⅡR基因的突变。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。