The sun, is also variable over a long term: its heat output goes up and down in cycles, the latest trend being downward.
太阳在长期内也是变化的：它的热量输出在周期中有上升，也有下降，最近的趋势是下降。
Its heat reservoir is composed of Yanshanian granite-porphyry and tuff of Mesozoic.
热储由中生代燕山期花岗斑岩、凝灰岩组成。
Its heat reservoir is composed of Yanshanian granite - porphyry and tuff of Mesozoic.
热储由中生代燕山期花岗斑岩、凝灰岩组成。
A large number of mining waste heat discharged in each year, the use of its heat will save energy.
矿区每年有大量的废热排出，把其废热利用起来会有很大的节能效果。
We can measure the amount of water in a pot, but we cant measure its heat. We havent an instrument for that.
我们能测量罐内的水量，但不能测量水的热度，我们还没有这种仪器。
We can measure the amount of water in a pot , but we can't measure its heat . We haven't an instrument for that.
我们能测量罐内的水量，但不能测量水的热度，我们还没有这种仪器。
By analyzing the results of the experiment, we know that the swirl groove tube can enhance its heat and mass transfer.
文中对螺旋槽管进行了实验，并对结果进行了分析，最后得出了结论。
Because of this, this kind of steel after welding manipulator welding, its heat treatment to avoid this temperature range.
正是因为如此，这类钢材在经过焊接机械手焊接之后，它的热处理要避开这一温度范围。
The heat transferring drum pipe, its heat insulativity and its heat-insulating Layer's thickness have not the distance scale.
对于圆筒输热管，其热绝缘性能与绝热层厚度之间的关系，远非象平壁那样呈线性关系。
It might have a surface of "hot ice" - water that remains solid despite its heat because it gets compressed by the planet's gravity.
这颗行星可能拥有一个“热冰”的表面，由于受到行星引力的压缩，水虽然受热但依然保持固态。
In particular, are using H-type SH motor products, its heat resistance and stability have been customers of consistent identity.
尤其是电机用H类SH类产品，其耐热和稳定性方面得到客户的一致认同。
In some literatures concrete temperature is calculated by converting its heat insulating layer into an air heat exchange coefficient.
有的文献把保温层折算为对空气的热交换系数来计算混凝土的温度。
This paper builds up the heat conveying model of the heat pipe screw, calculates its total conductivity and its heat conveying equation.
建立了热管式螺杆的热模型，计算出了热管式螺杆的总传导率，进而得出了热管式螺杆的传热方程。
Under off-design operating conditions, shifting of the flame's axial position and its heat release may also influence the system's stability.
在非设计工况下运行时，火焰的轴向位置和燃烧放热的变化也对系统稳定性产生影响。
Although its lifetime in the atmosphere as a free gas is much shorter than CO2, it is 23 times more potent in terms of its heat trapping ability.
虽然它作为自由气体在大气中的寿命比二氧化碳要短的多，但要说吸热能力，它比后者强23倍。
The GPE made of PVDF has bad solution retention capacity because of crystallization of PVDF and its heat stability has improved after adding PMMA.
由PVDF形成的凝胶电解质由于不断晶化，导致对电解液的保持能力欠佳，用添加pmma的方法改善了其热稳定性。
Hills said it was even more galling because the local coal was perfect for use in a steam locomotive. It generates steam quickly and maintains its heat.
Hills说更恼火的是，因为本地煤特别适合在蒸气机车中使用，因为它能快速产生蒸汽并保持热量。
The background of its heat recovery, technological reform, process calculation and economic technology effects are described and analysed in this paper.
文章讲述了常压塔顶循环回流取热的背景、技术改造方案、工艺计算过程和技术经济效果。
The heater body is designed with a atmospheric pressure structure, which adopts superheat pipes and corrugated pipes to improve greatly its heat efficiency.
这种加热炉的技术关键在于筒体按常压结构设计，采用了超导热管和波纹管强化传热材料，大幅度提高了热效率。
Test results show that wood has longer ignition time, less CO yields and less specific extinction area, but its heat release rate is between CR and PVC belts.
结果表明，木材与CR ，PVC输送带相比点燃时间较长，热释放速率介于两者之间，CO生成率和比消光面积较小；
Cool Energy says its SlowFlow system could provide the average U.S. home with 80 percent of its heat, 100 of its hot water, and 60 percent of its electricity needs.
酷能源表示，其SlowFlow系统可为美国家庭提供家庭所需的百分之八十的热，全部热水，百分之六十的电能。
Because malleable iron is obtained by heat treatment of white cast iron there are certain relations between the structure of white cast iron and its heat treatment.
可锻铸铁是白口铁经石墨化热处理而得，所以白口铁的组织与热处理有一定的关系。
After applying all-fiber lining in heat treating furnace, its heat loss of flue gases increases obviously, so that it is necessary for a heat exchanger to be equiped.
热处理炉采用全纤维炉衬后，排烟热损失有明显增加，显然有设置换热器的必要。
As the air loses some of its heat, the air that comes back out of the fins of the evaporator is cool and that cooled air is then vented into the passenger compartment.
当空气失去一定热量时，蒸发器散热片中出来的回流空气是冷空气，这股冷空气接着会被排放到乘客区这股冷空气接着会被释放到乘客区。
The micro particle acidic proteinase was studied respectively in respects of its heat stability and storage stability, when 4% of it was added in a pre-mixed pig feed.
分别从耐热性及在4%猪用预混料中的贮存稳定性两个方面，对微丸型酸性蛋白酶进行了研究。
When the temperature of heat source is relatively low, the falling film generator in the lithium bromide absorption machine can improve its heat and mass transfer performance.
热源温度较低时，在溴化锂吸收式制冷机或热泵中使用降膜式发生器可以改善传热传质的性能。
Heat exchange efficiency varies greatly with different structures of heat exchangers. Partial modification of the tubular heat exchanger can raise its heat exchange efficiency.
换热器的结构型式不同，其换热效率差别很大。对管壳式换热器结构做出局部改动，可以提高换热效率。
Adsorbent bed is the core component of adsorption refrigeration system, its heat and mass transfer performance has a direct influence on the refrigerating capacity of the system.
吸附床是吸附式制冷系统的核心部件，其传热传质性能的好坏直接影响到系统的制冷量。
Adsorbent bed is the core component of adsorption refrigeration system, its heat and mass transfer performance has a direct influence on the refrigerating capacity of the system.
吸附床是吸附式制冷系统的核心部件，其传热传质性能的好坏直接影响到系统的制冷量。
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