According to the work of a low pressure vacuum valves, ultra high vacuum valves and vacuum valves.
根据工作压力有低真空阀门、高真空阀门和超高真空阀门。
The TK-DL can test pressure vacuum breakers, reduced pressure backflow preventers or double check valve assemblies.
TK - DL可以检测压力真空断路阀，减压防回流阀或双止回阀总成。
Now, Engineered Enclosures are available specifically for pressure vacuum breakers with telescoping design for varied valve height.
我们公司设计的这款真空断路器外壳，可用于不同高度的阀门使用。
They can not only remain tank internal normal pressure, but also prevent over pressure vacuum in tank reduce liquid volatilization loss in tank.
它不仅能维持储罐气压平衡，确保储罐在超压或真空时免遭破坏，且能减少罐内介质的挥发和损耗。
Objective To discuss the clinical value and existing problems of the fixation technology of negative pressure vacuum bag in tumor precise radiotherapy.
目的：探讨负压真空气垫固定技术在肿瘤精确放疗中的临床应用价值及存在的问题。
Designed to test pressure vacuum breakers, reduced pressure backflow preventers or double check valve assemblies, allowing you to eliminate both pressure and differential test gauges.
适用于检测压力真空断路阀，减压防回流阀或双止回阀总成，不再需要压力表和压差表。
In recent years, with national high attention to coal mine safety and the non-oil development of home high-pressure switch cabinet, mine use high-pressure vacuum switch cabinet has a good market.
近年来，随着国家对煤矿安全的高度重视，国内高压开关柜向无油化发展，矿用高压真空开关柜具有良好的市场。
The detection systemcould not press or squeeze the egg like the graders did, but what would happenif they could pull on the egg with a slight negative pressure, or vacuum?
检测系统不能像分级员一样按压或挤压鸡蛋。然而，如果它们能够用极小的负压或真空把鸡蛋牵引起来，结果会怎样呢？
Space suits keep astronauts from suffering from the effects of the vacuum around them, but they don't have the same oomph of an entire atmosphere's worth of pressure.
太空服让宇航员处于真空状态，他们没有足够的气压来完成同样的动作。
Such is the allure of solar sails—large, ultrathin mirrors that harness the faint pressure of the sun's reflected light to move through the vacuum of space.
这就是太阳帆，一个超大超薄的太阳帆能够让你通过太阳光的光压在真空中快速前进。
Negative-pressure devices, which act like a vacuum over the bandaged wound, have become a central part of wound therapy in the United States over the last decade.
负压设备的工作原理，就像在包扎的伤口上制造一个真空环境，这种方法在过去十年里已经成为美国伤口治疗的核心部分。
As the gas expands rapidly in the surrounding area, it creates a temporary vacuum in the middle which determines a high-pressure implosion.
当气体在周围迅速扩张的时候，中间区域就会出现暂时的真空，而这造成了高压力的内爆。
"I told him many years ago, it's very hostile," Kittinger said. "you're in a vacuum, and your whole life is dependent on the pressure suit working properly."
“我告诉他许多年以前，这么做非常危险，”基廷格说，“你处于真空的环境中，你的全部生命都仰仗压力服的表现。”
Objective Discuss sterilization effect of B-class pulsation table top vacuum pressure steam sterilizer for dental handpiece.
目的探讨B级脉动真空压力蒸汽台式灭菌器对牙科手机的灭菌效果。
The piezoelectric sensors can also be used to measure the internal combustion engine measure pressure and vacuum measurement.
压电式变送器也可以用来测量发动机内部燃烧压力的测量与真空度的测量。
Some metallic parts are successfully fabricated using a vacuum pressure difference casting technology and a casting mould shell technology.
通过采用真空压差铸造工艺，结合铸造型壳的制造，成功制造出金属零件。
The results indicated that there exists obvious gas gap in molten iron flowing front, and the pressure in gas gap with EPS pattern during vacuum pouring is less than 1 a tm.
试验结果表明，铸铁件流动前沿不仅存在明显的气隙，而且采用聚苯乙烯模样材料，负压下浇注时，其气隙压力低于1个大气压。
I believe molding two halves with a vacuum pump to provide pressure will produce a better structure and allow me to better control wall thickness.
我认为两半的模具加上真空泵来提供压力能使结构更好，我也能更好的控制壁厚。
This paper derives the mathematical express on of the pressure of vacuum arc subjected to an axial magnetic field under stationary model and the assumption of local thermodynamic equilibrium etc.
本文在稳态模型和局域热力学平衡等假设下，推导了在纵向磁场下真空电弧压力的数学表达式。
Dark energy: this is a truly bizarre form of matter, or perhaps a property of the vacuum itself, that is characterized by a large, negative pressure (repelling force).
暗能量：这是一个确实奇异的物质形式，或者正是真空本身的属性，特色在于提供了极强的负压。
Sprinkler pump shell cracks, or impeller, leaf damage, or seal damage, will affect the degree of vacuum, water pumping, water pressure is too small or the phenomenon.
洒水车水泵泵壳出现裂纹、或者叶轮、倒叶损坏、或者水封破损，都会影响真空度，出现水抽不上来，或者水压过小的现象。
The experimental bench for applying vacuum pressure difference method was used for in-line testing, of which the exactness is up to over 98%.
采用真空压差法的试验台用于在线检测，准确性达98%以上。
Selective products have to pass the test in different conditions, such asshock heating and cooling, vacuum and pressure.
抽样的产品必须通过不同条件的测试，例如骤冷骤热的温度差测试，真空测试，强压测试等。
Pumps do not actually suck ; rather , pumps create a partial vacuum into which atmospheric pressure pushes water via the suction pipework.
水泵并不是实际的吸：更确切的说，水泵产生非完全的真空，然后大气压力将水通过吸管推进水泵中。
Tanks are equipped with various circuits to control product fill, pressure build-up, pressure-relief, product withdrawal, and tank vacuum.
罐子配备有各种控制产品灌装、压力积累、减压、产品取出和罐子真空的回路。
Objective to monitor the sterilizing effect of pulsing vacuum pressure steam sterilizer.
目的：监测脉动真空压力蒸气灭菌器灭菌效果。
Connect the vacuum pump to the compound pressure gauge; open the compound pressure gauge and vacuum pump to vacuum the indoor unit and connecting pipe.
将真空泵连于复合压力表，打开复合压力表和真空泵对室内机和连接管抽真空。
They can not only remain tank internal normal pressure, but also prevent over pressure or vacuum in tank reduce liquid volatilization loss in tank.
它不仅能维持储罐气压平衡，确保储罐在超压或真空时免遭破坏，且能减少罐内介质的挥发和损耗。
They can not only remain tank internal normal pressure, but also prevent over pressure or vacuum in tank reduce liquid volatilization loss in tank.
它不仅能维持储罐气压平衡，确保储罐在超压或真空时免遭破坏，且能减少罐内介质的挥发和损耗。
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