查询词典 let off steam

In the Steam-jet heat pump steam and water is the working substance, so condensing temperature is higher than the refrigerant normally using in heat pump.

本文是将蒸汽喷射式热泵技术应用于木材干燥，可以降低木材干燥的能耗，提高干燥质量和经济效益；蒸汽喷射式热泵以水蒸汽为工质，因此冷凝温度可以较高，适用于各种木材在不同的温度下的干燥以及高温干燥。

The quantitative and qualitative analysis accordantly show that, steam extraction has little influence on the approach point temperature difference and heat recovery rate; however, the pinch point temperature difference slightly rises with the steam extraction, while the heat end thermal temperature difference greatly drops.

定性分析和解析结果表明，抽汽后接近点温差和余热回收率的变化甚微，节点温差略有增大，但热端端差迅速下降。

B Superheat steam and reheat steam's water spray attemperator

c启动旁路系统、管道及疏水

For instance ,the later generations of Watt could invent the steam engine car just because of the contribution of his steam engine ;the coming into being of flattop is mainly contributable to the first plane of Wright brothers ;after the discovery of electricity ,the lamp ,the electromotor and electrocar come out one after another .

比如，watt发明steam engine ，后人在此基础上发明了蒸汽机车；莱特兄弟发明飞机后，航空母舰也应运而生；电被发现后，电灯泡，电动机等陆续问世。

A new strategy of boiler superheated steam temperature control is presented, which regulates the mass flow of desuperheater spray ahead of time by detecting flue-gas temperature and its change trend to control superheated steam temperature.

提出了一种锅炉过热蒸汽温度控制新策略，即通过检测烟气温度及其变化趋势来提前调节减温水量，从而有效地控制过热蒸汽超温。

James Watt's flyball governor (1769) regulated steam flow to a steam engine to maintain constant engine speed despite a changing load.

1769年瓦特的飞球调速器，它是一种调节蒸汽流的装置，即使荷载变化仍可保持蒸汽机的转速不变。

On the basis of same main components, comparison and analysis are performed on thermodynamic performance of HAT cycle, STIG (Steam-Injected Gas Turbine) cycle, gas-steam combined cycle and the relevant cycles with intercooling or reheat.

在主要部件相同的基础上，分析比较了HAT循环、注蒸汽燃气轮机循环、燃气—蒸汽联合循环以及各循环采用中冷或再热手段后相应循环的热力性能，确定了再热HAT循环高效率和中冷再热STIG循环高比功的优势，指出中冷手段对循环性能改善不大，回收中冷热量也不会收到好的效果，而再热手段对循环性能改善显著。

Changed the well chamber heating intermedial from the steam to the power plant boiler room's low temperature hot water, and realized the well chamber's steam changes to the water dynamic frequencyconversion constant temperature automatic control.

将井筒供暖热媒由蒸汽改为电厂锅炉房的低温热水，并实现了井筒汽改水动态变频恒温自动控制。

With the fact that steam turbo-generator set capacities ceaselessness enhancing , the steam temperature improving unceasingly, high pressure controlling system adopt to improve development respond to control oil, electric power plant can not adopt the tradition turbine oil to be the navar medium to guard against a conflagration under such situation.

随着汽轮发电机组容量的不断增大，蒸汽温度不断提高，控制系统为了提高动态响应而采用高压控制油，在这样的情况下，电厂为了防止火灾而不能采用传统的透平油作为控制系统的介质。

Comparing with those of steam distillation,the contents of undecane, nonane increased by SPME; and some components that would not be extracted by steam; disti llation were extracted by SPME, such as verbenol,yElenene,calarene,(1)aGurjunene,viridiflorol etc.

结论与水蒸气蒸馏法相比，固相微萃取法得到的十一烷、壬烷等烷烃的含量增加；并且提取出了水蒸气蒸馏法不能蒸馏出来的一些成分，如马鞭草烯醇、γ榄香烯、白菖烯、α古芸烯、绿花白千层醇等。

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48