7 hr 30 min Even after operators pump water into the primary loop, pressure is still high. The PORV 'backup valve is opened to lower the pressure.
7小时30分钟尽管操作员已将水抽入主回路，但温度仍然很高。减压阀的备用阀门被打开，减少压力。
The metal diaphragms act as the seal at the top of the valve. The primary improvement in this generation of valves is the elimination of the spring used to open the valve.
金属横膈膜在阀门的顶部作为密封。这一代阀门的主要的改进是取消了用于开启阀门的弹簧。
Primary uses for wrot brass are for ball valve stems and balls, and iron valve stems. a forging grade of brass is used in ball valve bodies and pieces.
黄铜的主要用途是球阀阀杆和球体，和铸铁阀门的阀杆。可锻黄铜可用于球阀阀体和断口部件。
In Electric actuators, the primary limit switches are used to control the open and closed position of the valve.
在电动执行器里，主要限位开关用来控制阀门的开启和关闭位置。
It features a primary check valve utilizing a rubber disc seating against a mating rubber part to ensure tight closing.
其特点在于第一止回阀采用一个橡胶阀瓣密合在相配的橡胶部件上，确保紧密的关闭。
The tests show that the asymmetry of the pneumatic electromagnetic valve is the primary factor forming uncertainty of changeover system.
试验结果证明了气动电磁阀工作非对称性是换向器系统不确定度的主要来源。
This paper explains the image expansion and confusion of the red and blue primary colours caused by the electric charge accumulation on the oil film in the colour TV light valve tube.
本文对油膜光阀管中电荷积累现象引起的图象扩大和红、蓝原色不能正确显示的原因进行了解释。
A compound intervention shuttle valve is provided that comprises first and second primary inlets, first and second secondary inlets, and an outlet.
提供包括有第一和第二初级入口、第一和第二次级入口和出口的组合式干涉梭阀。
Results Primary cardiac valve tumors were uncommon and accounted for only 3% (11/426) of all primary cardiac tumors. Most of them (10/11) were benign and malignancy was rarely encountered (1/11).
结果心脏瓣膜原发肿瘤较为罕见，仅占心脏原发肿瘤的3%（11/426），其中良性肿瘤占多数（10/11），恶性少见（1/11）。
Objective: To evaluate the therapeutic effect of external valve support (EVS) implantation in the treatment of primary deep venous insufficiency (PDVI).
目的：评估静脉瓣膜外支撑环(EVS)植入术治疗原发性下肢深静脉瓣膜功能不全的疗效和应用价值。
Regardless model of implanted bioprosthesis the primary purpose of aortic valve replacement is to improve hemodynamic conditions.
无论何种模型的植入生物瓣膜，主动脉瓣置换术的主要目的是改善血流动力学状况。
Objective To evaluate therapeutic effect of external valve support(EVS) implantation in the treatment of primary deep venous insufficiency(PDVI).
目的评估静脉瓣膜外支撑环（EVS）植入术治疗原发性下肢深静脉瓣膜功能不全的疗效和应用价值。
Unless otherwise indicated, the fabricator shall install all in-line devices, control panels, and process taps up to and including the primary shutoff valve.
除非另行规定，否则，加工商应安装所有管线内装置、控制面板及工艺接头并包含一级开关阀。
Objective To assess the effect of combined application of valve repair operation and laser photocoagulation in patients with primary deep venous valve dysfunction.
目的探讨股浅静脉瓣窦环包联合激光光凝技术治疗下肢深静脉瓣膜功能不全的手术治疗方法。
Conclusion External banding valvuloplasty of superficial femoral vein is an effective and simple procedure with few complications in treatment of primary lower extremity deep vein valve insufficiency.
结论股浅静脉壁环形缩笮术治疗原发性下肢深静脉瓣膜功能不全，手术简便，并发症少。
Aim To evaluate the effectiveness of external banding valvuloplasty of superficial femoral vein in the treatment of primary lower extremity deep vein valve insufficiency.
目的探讨原发性下肢深静脉瓣膜功能不全的手术治疗方法及效果。
Objective To evaluate the effectiveness of external constriction valvuloplasty of superficial femoral vein in the treatment of primary lower extremity deep vein valve insufficiency.
目的探讨原发性下肢深静脉瓣膜功能不全的手术治疗方法及效果。
Objective To evaluate the effectiveness of external constriction valvuloplasty of superficial femoral vein in the treatment of primary lower extremity deep vein valve insufficiency.
目的探讨原发性下肢深静脉瓣膜功能不全的手术治疗方法及效果。
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