很昂贵的

Constant Flow Valve and the constant flow regulating valve are different: there is only one fixed flow valve valve from the valve directly feel before and after the differential pressure valve, the implementation of change in valve resistance action can be "direct action type variable resistance valve "It should not regulate the flow line, so the use of Constant Flow Valve can not be implemented to change the total flow of energy to run, and this set the flow valve as there are no imports of expensive, in the past, domestic heating systems seldom used, and only at some central air conditioning system to see.

定流量阀和恒流量调节阀不同的是：定流量阀只有一个阀瓣，由这个阀瓣直接感受阀门的前后差压，执行改变阀门阻力的动作，可成为"直动式变阻力阀"，它不能在线调节流量，因此使用定流量阀无法实施改变总流量的节能运行，而且这种定流量阀国内没有，进口的价格昂贵，以往国内的供暖系统很少采用，只有在一些中央空调系统中见到。

Constant Flow Valve and the constant flow regulating valve are different:there is only one fixed flow valve valve from the valve directly feel before and after the differential pressure valve,the implementation of change in valve resistance action can be"direct action type variable resistance valve",闸阀;It should not regulate the flow line,so the use of Constant Flow Valve can not be implemented to change the total flow of energy to run,and this set the flow valve as there are no imports of expensive,in the past,domestic heating systems seldom used,and only at some central air conditioning system to see.

订流量阀和恒流量调节阀不同的是：定流量阀只需一个阀瓣，由这个阀瓣直接感受阀门的后后佳压，执行转变阀门阻力的动做，否成为"直动式变阻力阀"，facebook外白板，它没有能在线调节流量，研建课，因己运用定淌量阀无法实施改变合流量的节能运行，而且这种定流量阀海外不，入口的价钱昂贵，以来国内的供暖体系很少采用，只需在一些中央空调系统内见到。

Most of these depend heavily on Russian gas and oil. These are typically costly and come from clapped-out fields along ageing pipelines through unreliable transit countries, with unwelcome political conditions attached.

这些国家中的很大一部分及其依赖于俄国燃气和石油，又昂贵又是从破旧地区沿着老化的石油管道输送而来，还要经过靠不住的传送国家并接受它们附加的恼人的政治条件。

It's one expensive piece of hardware! But just as in real life, it allows you to project nuclear force nearly anywhere on the map from a platform that the enemy has a real hard time tracking.

非常昂贵！但是就像真实世界中的那样，核潜艇可以让你从一个敌人很难找到的平台上向几乎地图上的任何地方发射核弹。

At Bell Labs, Shockley recognized early on that the solution to one of the technological nightmares of the day--the cost and unreliability of the vacuum tubes used as valves to control the flow of electrons in radios and telephone-relay systems ─ lay in solid-state physics.

在贝尔实验室，萧克利很早就体认到名为当代科技梦餍之一的问题─在收音机以及电话相关的系统中，如同控制阀门般控制电子流动、价格昂贵却又不可仰赖的真空管─其解决方法必定栖息于固态物理学之中。

According to aviation experts said the aircraft purchased from Zhao Benshan models analysis, is likely to be produced in Canada's Bombardier Challenger series, this twin-engined jet at high speed, ride comfort, belonging to the executive-level business jet, expensive.

据航空专家称，从赵本山购买的飞机机型上分析，很可能是加拿大产的庞巴迪挑战者系列，这种双发动机喷气式客机速度极快，乘坐舒服，属于行政级别的公务机，造价昂贵。

Calf rennet, consisting of mainly chymosin with a small but variable proportion of pepsin, is a relatively expensive enzyme and various attempts have been made to find cheaper alternatives from microbial sources These have ultimately proved to be successful and microbial rennets are used for about 70% of US cheese and 33% of cheese production world-wide.

与其他凝乳酶一起组成了一个虽小然而却有很大比率的胃蛋白酶的幼牛凝乳酶相对来说比较昂贵，因此目前关于能否在微生物资源中寻找廉价的凝乳酶正在试验中。这一设想最终一定会成功并且从微生物中得到的凝乳酶将会用于生产美国市场中77%，全球市场33%的乳酪制品。

Contrastingly, when taking spatial patterns into consideration, species extinction can also be classified into two types: extinction of superior competitors and extinction of inferior competitors.

获取生境毁坏对种群动态影响的长期和大尺度的试验的花费十分昂贵，而且需要的时间很长，因而可靠信息的获取非常的困难。

Offering his guests coffee, the professor went to the kitchen and returned with a large pot of coffee and an assortment of cups - porcelain,plastic, glass, crystal, some plain-looking, some expensive and some exquisite - telling them to help themselves to the coffee.

教授从厨房里拎出一大壶茶，和好多的杯子-有细瓷的，塑料的，玻璃的，水晶的，有的很普通，有的极其精致，昂贵。教授请客人们自己倒茶。

By contrast, the figure is about $25,000 at the Mayo Clinic in Rochester, Minn., where doctors closely coordinate care, are slow to bring in specialists and aim to avoid expensive treatments that offer little or no benefit to a patient.

与之相反的是，在明尼苏达州的美澳诊所，这个数目大概需要25000美元，美澳诊所的医生治疗时密切协作，医疗专家请的晚，同时他们避免价格昂贵却对病人很少或几乎没有益处的治疗方案。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失