优缺点

It is simple and effective. Currently, the reconstruction materials include autologous, allograft, xenograft, synthesized nonabsorbable and absorbable patches, and acellular patch.

目前的重建材料有自体组织、同种异体移植物、异种移植物、合成的不可吸收补片、合成的可吸收补片、脱细胞补片等，各有其优缺点。

Currently, the reconstruction materials include autologous, allograft, xenograft, synthesized nonabsorbable and absorbable patches, and acellular patch. They have specific advantages and disadvantages.

目前的重建材料有自体组织、同种异体移植物、异种移植物、合成的不可吸收补片、合成的可吸收补片、脱细胞补片等，各有其优缺点。

This review focuses on the current research progress of the liver cell differentiation source, and it also discusses the advantages and disadvantages of various hepatic stem cells and nonhepatic stem cells, expecting to provide a reference for liver cell source selection during tissue engineering, an adequate and suitable source for bioartificial liver and hepatocyte transplantation and to help to treat liver diseases.

本文着重论述了目前肝脏细胞的分化来源研究进展情况，并对各种肝源性和非肝源性干细胞的优缺点进行了讨论，以期为肝组织工程选择细胞来源提供参考，为生物人工肝、肝细胞移植提供充足、合适的细胞来源，协助治疗肝脏疾病。

Objective rio compare Onlay island flap procedures and Snodgrass procedures for hypospadias repair, and evaluate the choice between the two.

目的：比较加盖岛状皮瓣尿道成形术与尿道板纵切卷管尿道成形术在治疗尿道下裂中的优缺点，并探讨术式选择的条件。

This article analyzes the material feature and the advantages and disadvantages of several ossicular chain reconstruction materials.

分析几种听骨链重建材料的材料学特性及其在应用过程中存在的优缺点。

After analysis and parison of virtues and hort ings of existing systemsafety evaluation ways, Artificial Neural Network, Artificial Intelligence and Expert System are used to build new system safety evaluation means. System safety evaluation model and intelligent expert system for fault diagnosis based on ANN have been put forth. Development and realization of visual neural network for system safety valuation and fault diagnosis provides new idea for system safety evaluation and accident mode diagnosis.

对已有的系统安全评价技术方法的优缺点进行了分析和对比，继而将神经网络技术、人工智能技术、专家系统应用于开发新的系统安全评价方法，提出了基于人工神经网络的系统安全评价方法和基于神经网络的智能故障诊断专家系统模型，开发了可视化的神经网络系统，为系统安全评价与事故模式诊断提供了新思路。

Objective Facial paralysis is one of the most of important postoperative complications of parotidectomy. The aim of this paper is to study the correlation of different dissection of facial nerve and facial paralysis.

目的：面瘫是腮腺术后的重要并发症之一，作者通过研究腮腺手术的三种不同面神经解剖术式后的面瘫发生率的差异，探讨三种术式的优缺点。

In order to study these algorithms systematically and deeply, they are reviewed in this paper based on c-means algorithm, from metrics, entropy, and constraints on membership function or cluster centers. Moreover, the advantages and disadvantages of the typical fuzzy partitional algorithms are discussed.

为了能更为系统和深入地了解这些聚类算法及其性质，本文从改变度量方式、改变约束条件、在目标函数中引入熵以及考虑对聚类中心进行约束等几个方面，对在C-均值算法的基础上得到的基于划分的模糊聚类算法作了综述和评价，对各典型算法的优缺点进行了实验比较分析。

The advantages and disadvantages of the two methods in treating various types of patellar fracture were compared.

比较两种方法治疗各型髌骨骨折的疗效及各自的优缺点。

The advantages and disadvantages of balanced truncation, singular perturbational method and generalized singular perturbation are analyzed. A quasi-generalized singular perturbational model reduction method is proposed.

分析了平衡截断法、平衡奇异摄动法和广义平衡奇异摄动法存在的优缺点，提出了一种近似广义奇异摄动模型降阶算法。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。