With comprehensive analysis, two-stage compression cycle is applied to air-source heat pump to adapt to the low-temperature environment.
本文通过综合分析，选择将两级节流中间不完全冷却双级压缩循环应用于空气源热泵热水器以适用低温工况。
The heat pump system with flash-tank can effectively improve the efficiency and reliability of air-source heat pumps running in low-temperature environment.
带闪发器的热泵系统可以有效地改善空气源热泵在低温环境下运行的制热性能和运行可靠性。
But there are some shortage of ordinary single-stage heat pump in low-temperature environment, such as high compression ratio, devoid heating power and low efficiency.
但普通单级空气源热泵热水器在低温环境下运行中存在压缩比过大、制热量不足和制热效率太低等问题。
It started a special emphasis on access to the required temperature environment, the process of always maintain the required low-temperature environment, until consumers to date.
它特别强调一开始就进入所要求的温度环境之中，过程中始终保持所需要的低温环境，直到交给消费者为止。
To date, no studies have been conducted on plastic decomposition at low temperature in the environment owing to the mistaken conception that plastic does not decompose.
他说，“到目前为止，由于错误地认为塑料不会降解，所以人们尚未开展有关塑料在低温环境降解的研究。
However, the high temperature sintered body strength slightly lower, mainly for the use of low temperature environment.
但是烧结体的高温强度稍低，主要用于使用温度较低的环境。
According to the environment of ecological areas in China, three typical ecological areas of (cold area, warm area and hot area) low temperature grain storage were divided in this study.
根据储粮生态环境，将我国分为三个典型的低温储粮生态区域，即低温区、中温区和高温区。
Has a long service life and high reliability, can be used in the demanding high and low temperature environment, poor power conditions.
具有超长的服务寿命和很高的可靠性，可以应用于苛刻的高低温环境、恶劣的电力条件。
It introduces a space environment simulator control system used to realize ultra low temperature and high vacuum.
介绍一种用于实现超低温、高真空的太空环境模拟器控制系统。
High temperature resistance (HTR) of plant is a kind of resistance of low infection type, which is induced by higher environment temperature.
植物的高温抗病性是由较高的环境温度所诱导的一种低反应型抗病性。
It has favorable oxidation resistance in moderate and low working temperature environment.
并在中、低温环境下使用具有良好的抗氧化性能。
The recuperators have high air resistance , low air preheating temperature and high fan pressure head , and fan has much noise to environment and are apt to break down with vibration .
此换热器空气阻力大，空气预热温度不高，风机压头高，环境噪声大，风机振动大、易损坏。
The heat pump has the advantages of non polluting environment and it can make use of thermal energy of low temperature.
热泵具有不污染环境，可利用低温热能等优点。
The low-temperature starting and pressurized power recovery of diesels in plateau environment are discussed and analyzed, some solvable measures and methods are put forward.
对高原环境下柴油机的低温启动和增压功率恢复进行了探讨和分析，提出了一些解决措施和方法。
Ideally suited for bypassing and coupling application circuits operating with low DC bias in the environment approaching to room temperature.
适用于要求大容量，使用温度范围接近于室温的旁路、耦合等，及低直流偏压电路中。
Large cooling capacity, metal shell, suit terrible environment, such as high temperature, low temperature and big vibration, etc.
制冷量较大，室外机全金属壳体，适用于高、低温，震动大的恶劣使用环境。
To avoid placed in direct sunlight or temperature is too high, too low environment.
避免置于阳光直射或温度过高、过低的环境。
An advanced control method is necessary for large low temperature (air cooling) environment simulation test system because of its complexity, more interference factors and poor safety.
大型低温(空气制冷)环境模拟试验系统的模型复杂、干扰因素多、安全性差，亟待寻求先进的控制方法支持。
Firstly, tensile experiment of PVDF-coated architecture membrane was conducted to obtain its tensile mechanical parameter under normal and low temperature environment.
首先，对PVDF涂层建筑膜材进行拉伸试验，测定其在常温和低温环境下膜的拉伸力学性能参数。
Drought, low temperature and high salt are adverse abiotic environment that greatly affected the growth of plant and the productivity and quality of crops.
干旱、低温和高盐是目前影响农作物的主要非生物限制因子，它严重影响作物的生长发育，以及产量和品质。
5 hydraulic oil filter core is suitable for low temperature and high temperature environment, can be used after cleaning, no change.
5液压油滤芯适用低温、高温环境；清洗之后可以再使用，免更换。
Combining with economy, analyse and compare the impact on indoor thermal environment in the region after running the low temperature hot water radiant system heating and others heating type.
结合经济性，分析比较在该地区应用低温热水辐射采暖方式和其他采暖方式对室内热环境的影响。
The paper introduces the influence that low temperature liquified gas products to environment in the course of producing and casting and applying.
介绍了低温分离气体产品在生产、贮运及使用过程中将会对环境造成的一些影响。
The results show that structural irrationality of mixed grain is the main reason for structural integrity failure under low temperature environment.
结果表明，药柱结构的不合理性是导致低温贮存条件下组合药柱发生结构完整性破坏的主要原因。
The low heat engine can convert low temperature heat energy into mechanical energy, reduce energy source waste and protect the living environment.
能够把低温热能转化为机械能，减小能源浪费，保护生存环境。
Enduring high and low temperature is an important performance parameter for rugged computers to resist severe environment.
耐高低温是加固计算机抗恶劣环境要求中的重要性能指标。
The work in this paper develops of low temperature radiation heating cable, analyses thermal field under application environment, and affords theoretic basic for making the cable in our country.
本文研究的课题是低温辐射加热电缆的研制及应用环境下热场分析，求解应用环境下的热效率问题，为低温地热电缆的国产化和应用提供了理论基础。
The existence of petzite and hessite as low-temperature isomorphic modifications indicates that this kind of deposits has been formed in the low temperature and low pressure environment.
而成矿体系中碲金银矿、碲银矿等低温同质多像变体的存在，反映了该类型矿床形成于成矿温度和压力较低的环境条件下。
The existence of petzite and hessite as low-temperature isomorphic modifications indicates that this kind of deposits has been formed in the low temperature and low pressure environment.
而成矿体系中碲金银矿、碲银矿等低温同质多像变体的存在，反映了该类型矿床形成于成矿温度和压力较低的环境条件下。
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