双管的

METHODS: Cerebral cortex cells of 8-week aborted human fetus were harvested and cultured in vitro to obtain human embryonic NSCs. Cerebral hemorrhage rat models were established via injection of autologous arterial blood in caudate nucleus. Two days after modeling, 5 μL BrdU-labeled human embryonic NSCs suspension was transplanted at four points surrounding hematoma cavity in the rats.

通过注射自体动脉血到尾状核制作大鼠脑出血模型，出血后2 d将标有5'-溴脱氧尿嘧啶的人胚神经干细胞悬液移植到血肿腔周围的4 点，1，2周后处死大鼠，相邻脑组织切片行5'-溴脱氧尿嘧啶／微管相关蛋白2和5'-溴脱氧尿嘧啶／胶质纤维酸性蛋白免疫组织化学双染。

The composition voltage, the electric current double closed loop voltage-stabilized source, used the integrated phase shifting crystal thyratron module to do for the electrical energy transformation component, in detail has calculated the rectification main circuit main component parameter; In the pulse-duration modulation part, used the special-purpose integrated circuit to realize the frequency modulation to adjust the pressure, did take IGBT as the power transformation component, realized the output voltage frequency modulation to adjust the pressure, and has calculated the related parameter.

在调压稳压电压源设计中采用二阶工程设计法设计了电压和电流调节器，组成电压、电流双闭环稳压电源，采用集成移相晶闸管模块做为电能变换器件，详细计算了整流主电路主要器件的参数；在脉宽调制部分，采用专用集成电路实现了调频调压，以 IGBT 做为功率变换器件，实现了输出电压的调频调压，并计算了有关参数。

On the foundation of conventional medicine cure, double-level nasal mask/mask ventilation mode is used for the treatment of respiratory failure caused by severe asthma,and it can effectively reduce tracheal intubation rate and cure expenses, and decurtate hospitalization time.

在常规药物治疗的基础上，采用双水平鼻／面罩NIPPV用于危重症哮喘合并呼吸衰竭的治疗，安全有效，可减少气管插管率，降低住院时间和费用，但应严格掌握适应证，密切监测各项指标，必要时转为有创通气，避免贻误治疗时机。

The Cliny PEG 13 CH can be placed safely in an endoscopically controlled introducer procedure with dual gastropexy.

新的内镜下胃双固定插管术能够安全替代旧的Cliny PEG 13 CH术。

Embolization of hepatical artery and portal vein plus alcohol injection and immunotherapy is a good combination in treating patients with advanced hepatical carcinoma.

以肝动脉、门静脉双插管碘油乳化化疗+无水酒精注射+免疫治疗取得最佳治疗效果和有效的延长生存期，是目前综合治疗中晚期肝癌的最佳治疗方法之一。

Percutaneous nephrostomy guided by Ultrasound and C-arm mobile fluoroscopy is a safe procedure and preoperative analyzing the high risk factors of complications and preparing the preservation methods may sublimate the security and therapeutic efficacy.

熟悉肾造瘘和输尿管内双J管置入术的操作程序，术前综合评估并发症产生的危险因素，并积极防范处理，可有效提高手术安全性和治疗效果。

The cardiomyopathy was accompanied by multisystem abnormalities, including the nephrotic syndrome, bilateral sensory neuropathy of the hands and feet, bilateral carpal tunnel syndrome, hoarseness, hypothyroidism, splenomegaly, normocytic anemia, and thrombocytosis.

主治医生：张主任，荟萃该病例在临床，心电图，心脏超声上的发现都揭示出此病例是冠脉旁路移植手术后30个月病程中的进行性限制性心肌病，并伴有多系统功能异常，包括肾病综合症，四肢感觉障碍，双侧腕管综合症，声嘶，甲状腺机能减退，脾肿大，正细胞性贫血和血小板增多症。

The PWM chip SG3525 with stable performance is used to adjust regulators and MCU 51 is adopted to set the output voltage. The double-push-pull merle based on MOS structures is choused for power amplifier, which simplifies the driving circuit, improves power supply efficiency.

采用性能稳定常用的PWM芯片SG3525进行反馈调整稳压，并通过51单片机设定输出电压，功放电路采用MOS管搭建的双端推挽方式，简化了驱动电路，提高了电源效率。

CXD-tube-type electrostatic precipitator, CXF-type hybrid electric precipitator, CXS Dual-field electrostatic precipitator, CXW horizontal electrostatic precipitator, UF Series Single Bag Filter, MDC coal mill anti-anti-static bag dust collector browser, LFEF shaft kiln dryer and bag dust collector, ZC mechanical cleaning bag dust collector bag filter, etc. as well as various accessories I have become well-known plant products, and environmental protection department's endorsement.

CXD型管式电除尘器、CXF型复合式电除尘器、CXS型双电场电除尘器、CXW型卧式电除尘器、UF系列单机袋收尘器、MDC煤磨防暴防静电袋收尘器、LFEF烘干机及立窑袋收尘器、ZC机械反吹袋收尘器等以及各种袋除尘器配件都成为我厂的知名产品，并得到环保部门的认可。

On the basis of researching sealing pipeline joint structures with double-cone pipe union in depth, this paper used the method of Robust Design, synthesized the mainly factors such as geometrical sizes of components, mechanical property of material, surface roughness of components, axial preloading force, fit clearance, taper and the difference of taper etc., and obtained a set of design rational parameters.

本文在深入研究双锥形管接头密封管路联接结构的基础上，运用稳健设计方法，综合元件几何尺寸、材料力学性能、元件表面粗糙度、轴向预紧力、配合间隙、锥角和锥角差等因素，找出了该结构比较合理的设计参数组合。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐