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- The main source of inefficiency in Newcomen's engines was the repeated alternate heating and cooling of the main cylinder, and it was James Watt ( 1736 -1819) who devised an engine which avoided this wasteful procedure. 纽科门发动机效率低下的一个主要原因在于它需要不断地对主圆筒交替进行加热和制冷,詹姆士 - 瓦特(1736-1819)设计出的一种发动机避免了这一浪费步骤。
- to treat(metal,for example) by alternate heating and cooling in order to produce desired characteristics,such as increased hardness; temper 对某种物质(例如金属)进行冷热相间的处理,以期产生所希望的特性,比如提高硬度;使回火
- alternate heating and cooling [化] 交替加热及冷却
- Drafty windows and doors pack real dollars onto your heating and cooling bills. 而那些漏风的门窗会使你们的能耗帐单数增加不少。
- The continuous digester should have lower energy requirements because the liquor-to-wood ratio is lower and because the digester shell is not alternatively heated and cooled. 因为液比较低且蒸煮器外壳不需要反复加热和冷却,所以连续蒸煮器的能源消耗要小一些。
- Heating and cooling a weldment in such a way as to obtain desired properties. 为了获得期望的特性,对焊接件进行的加热及冷却。
- Mid-range steam applications. Throttling and balancing of hydronic heating and cooling systems. 中档蒸汽应用。热水供暖和冷却系统的节流和平衡。
- To remove strains and reduce coarse crystalline structures in(metal),especially by heating and cooling. 使规格化除去特点并减少(金属)里的粗晶结构,尤指用加热和冷却的方式
- Land areas blanketed with vegetation heat and cool more slowly than barren areas do. 植物覆盖的地面变暖和变冷比不毛地面慢。
- YMeasure room-to-room temperature variations to balance heating and cooling systems. 测量房间之间的温度变化,平衡加热和致冷系统。
- Heating and cooling systems through the energy cost savings from the more efficient system. 一种计算收回制冷和制热系统成本差所需时间的方法。
- Three of the six components are heat exchangers used during the continuous heating and cooling of the product. 其中的三个组成部分是热交换器,连续加热和冷却时使用。
- The sections of the plate heat exchanger on either side of the regeneration section are used for heating and cooling. 片式热交换器的另外两段位于回流段的两侧,用于加热和冷却。
- Due to the special properties of the thermoelectrical effect, Peltier devices can be used for both heating and cooling. 由于其特有的热电效应,珀尔贴装置在加热和冷却条件下都可以使用。
- These perturbations feature a wavelike pattern of alternating rings of heating and cooling centered on the hurricane. 这些变化特徵类似波动,以飓风为中心的环状加热及冷却区交互出现。
- District heating and cooling (DHC) system is a part of energy system in a modern city. 集中供冷供热系统是现代化城市能源系统的一部分。
- Come on, have some tea and cool off. 来,喝点茶,凉快一下。
- To remove strains and reduce coarse crystalline structures in(metal), especially by heating and cooling. 使规格化除去特点并减少(金属)里的粗晶结构,尤指用加热和冷却的方式
- Steel is tempered by heating and then cooling it. 钢是通过先加热后冷却来回火的。
- Geothermal resources will be exploited to expend provide heating and cooling service for around 5 million square meters floor area by 2008. 开发地热资源,2007年全市地热、地温供暖制冷面积达到500万平方米。