Experiments conducted with moderate compression ratios (10.4 and 15) and using two modes of HCCI control, i. e. intake heating and NVO (Negative Valve Overlap) received the expected results.
试验在一个专用于HCCI研究的单缸发动机上实施，采用两种中等的压缩比(10.4和15)和两种HCCI模式(进气加热和负气门叠开)，试验结果证实了这种期望。
Working principle: piston moves from left to right, form a negative pressure pump cylinder, the liquid tank into the pump by the inhalation valve cylinder.
工作原理：活塞自左向右移动时，泵缸内形成负压，则贮槽内液体经吸入阀进入泵缸内。
How it works: the piston moves from left to right, form a negative pressure pump cylinder, then the suction tank fluid through the valve into the pump cylinder.
工作原理：活塞自左向右移动时，泵缸内形成负压，则贮槽内液体经吸入阀进入泵缸内。
AIM: To investigate the influence on the negative emotion by cognitive psychological and behavioral interventions in patients with heart valve replacements during the perioperative period.
目的：探讨认知心理和认知行为干预对心脏瓣膜置换术患者围手术期负性情绪的影响。
Result shows that the negative pressure and the cavitation can be minished by improving the structure of the valve seat and core.
通过分析发现，如对阀座和阀芯的结构进行改进，可以明显减小负压值与气穴发生的程度。
Rotate the emergency closing valve positive and negative continuously twice so as to solve the safety problem, it is easy to operate, faster and non-slam.
采用该应 急阀，只须连续正反两次转动即可解决安全问题，操作简单、快捷、无撞击。
The latest technologies in paraffin removal and control in foreign countries are briefly introduced, such as paraffin removal by oil well tubing fillup valve, negative pres…
简要介绍了国外最新应用的清蜡、防蜡方法，诸如油井油管注入阀清蜡、负压冲击清蜡、井下就地产热清蜡、油井直接电加热清蜡和使杆管表面亲水防蜡等。
A quantitative packer with negative pressure valve port relates to a powder packer technique.
负压式阀口定量包装机涉及一种粉料的包装机技术。
The utility model discloses a negative pressure generator used by a water pump suction pipe without a bottom valve.
本实用新型公开了一种无底阀水泵吸水管用负压发生器。
Full use of its bearing capacity of the tank to reduce the oil vapor emissions, the principle is to use the weight of the valve plate to control the breath pressure and suction tank negative pressure.
充分利用油罐本身的承压能力来减少油蒸气排放，其原理是利用阀盘的重量来控制油罐的呼气正压和吸气负压。
The utility model comprises an air drum, a setting scale for air inflow, a positive negative pressure gauge, a respiration valve and a face mask;
本实用新型有一个气鼓，一个进气量设定标尺，一个正负压力表，一个呼吸活瓣，一个面罩；
The utility model comprises an air drum, a setting scale for air inflow, a positive negative pressure gauge, a respiration valve and a face mask;
本实用新型有一个气鼓，一个进气量设定标尺，一个正负压力表，一个呼吸活瓣，一个面罩；
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