外膜

When the external control pressure increases to the shutoff pressure setting point of the valve, the external control pressure acting on the underside of the diaphragm, which breaks the balance of the compression of the pressure spring and the latch lever, triggers the latch and disengages valve disc arm from the latch.

当外接控制感应压力﹝即减压下游压力﹞升到此阀关断压设定点时，控制压作用于皮膜下层破坏压力弹簧压缩与闩杆间的平衡，然后扳开闩扣并从闩扣释放阀门封盘。

Running, the screw pump cylinder outer surface and inner wall formed between the layer of oil film prevents direct contact between the metal, so screw tooth wear significantly reduced.

在运行中，螺杆外圆表面和泵缸内壁之间形成的一层油膜，可防止金属之间的直接接触，使螺杆齿面的磨损大大减少。

Objective To investigate the effect of screening for Down syndrome by detecting serum AFP and F-β hCG in pregnant women(14～20 weeks).

目的 探讨孕中期妇女（14～20w）外周血中甲胎蛋白和游离绒毛膜促性腺激素在胎儿唐氏综合征产前筛查中的作用。

Melting by 5 T / hot air at the cupola and 750 KG / N IF the electric furnace, the high temperature will be above 1500 ℃ hot metal, machine-wave modeling in addition to modeling, advanced Fumo sand and shell technology, equipped with a polishing equipment and the entire fire, Polished, finishing processes, can provide users with fine casting.

熔炼采用5T/时热风冲天炉和750KG/N的中频电炉，可获得1500℃以上高温铁水，造型除潮模机器造型外有先进的复膜砂和壳型工艺，配备有抛光设备及整火、磨光、精整工艺，可为用户提供精美的铸件。

Filter sand pipe and gravel pack with wire wrapped screen belong to mechanical measures.

复合防砂除了管内砾石充填微裂缝防砂和复膜砂热采绕丝管复合防砂外，还有压裂充填和复合射孔防砂。

Using an epidural catheter placed at the level of T1-2 or T2-3, seven patients scheduled for awake CABG received TEA for total arterial myocardial revascularization after partial lower sternotomy.Six patients remained awake and spontaneously breathing during the entire procedure, but one required intraoperative intubation for respiratory distress caused by phrenic nerve palsy. Hemodynamics were stable throughout surgery without significant arterial hypercarbia. All patients rated TEA as "good" or "excellent."

七个患者被安排在清醒的CABG接受TEA，在部分下肢手术后，使用安置於 T1-2 或 T2-3 的硬膜外导管，以进行总动脉的心肌血管更换术，其中六名患者保持清醒，并且在手术过程中自然地呼吸，但是一位患者因为隔膜神经瘫痪导致呼吸困难，而需要进行手术中的插管，血液动力学在手术过程中是稳定的，并未发生动脉的血中二氧化碳含量过高，所有患者认为TEA是&良好或极佳的&。

Fluid restriction and an effective epidural analgesia are the key factors that determine outcome of the fast-track program.

流质限制和有效的硬膜外镇痛是决定快速通道方案结果的关键因素。

Compound injection of 1% tetracaine and 0 5% lidocaine were used in case group,and 2% lidocaine were used in control group.

结果 ：1%利多卡因复合 0 2 5 %丁卡因液在麻醉时效、麻醉效能和麻醉效果上比 2 %利多卡因硬膜外腔麻醉，作用时间延长，麻醉平面扩大，有统计学意义。

We have successfully attained the fulllength cDNA sequence of FRG4, bioinformatic analysis shows FRG4 gene has 99%homology with Homosapiens synapse associated protein 1 (SYAP1), consists of 9 exons and 8 introns and located in Xp22.2. None transmembrane domains but a BSD domain was discovered, and its encoding protein is probably a water-solubility protein.

结果表明cDNA文库基础上运用热启动PCR获得FRG4全长cDNA序列，生物信息学分析显示FRG4基因与人类的突触相关蛋白有99%同源性；定位在X染色体的短臂2区2带2亚带2次亚带；由9个外显子和8个内含子组成；无跨膜区段；有一结构域BSD；该基因编码蛋白可能为一水溶性蛋白。

All patients were immobilised in a plaster cast or external fixation after operation.

在硬膜外或臂丛麻醉下，应用电视X线或/B超定位，将HESW的焦点分别对准近、远侧骨折端各施2000次震波(定位时HESW的焦点要避开内固定物)。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。