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1·The once-through boiler of large capacity and high parameters is a very complex unit to be controlled.

大容量高参数的直流锅炉单元机组是一个十分复杂的调节对象。

2·The types and design principles of once-through boiler startup system and steam turbine by-pass system are expounded.

阐述了直流锅炉启动系统与汽轮机旁路系统的型式及设计原则。

3·According to the running features of supercritical once-through boiler, the article proposes a neural network decoupling control method.

本文针对超临界直流锅炉运行特性，提出了一种神经网络解耦控制方法。

4·On this base, the feasibility of applying vertical tube coils to 600mw supercritical sliding pressure once-through boiler is demonstrated.

在此基础上，论证了600 MW超临界压力变压运行直流锅炉采用垂直管圈的可行性。

5·Since that evening I haven't once slept through the night.

自那晚之后，我再也没睡过一次囫囵觉。《柯林斯英汉双解大词典》

6·Once it's in the soil, plants absorb it through their roots.

一旦它进入土壤，植物会通过根部将它吸收。

7·Once hay has been cut and baled, it has to go through some chemical processes.

干草一旦被割下来打成捆，必须经过一些化学处理。《柯林斯英汉双解大词典》

8·The administration has not really thought through what it plans to do once the fighting stops.

政府还没有真正充分考虑一旦战争结束它打算做什么。《柯林斯英汉双解大词典》

9·Could we run through your proposals once again?

我们再来简要讨论一下你的建议，好吗？《牛津词典》

10·Always read an exam all the way through at least once before you start to answer any questions.

在开始回答任何问题之前总是把试卷从头到尾读至少一遍。《柯林斯英汉双解大词典》

直流的

1·The once-through boiler of large capacity and high parameters is a very complex unit to be controlled.

大容量高参数的直流锅炉单元机组是一个十分复杂的调节对象。

2·According to the running features of supercritical once-through boiler, the article proposes a neural network decoupling control method.

本文针对超临界直流锅炉运行特性，提出了一种神经网络解耦控制方法。

3·The research results has provided an effective solution to the marine creature fouling in seawater once-through cooling system of gas-and-steam united circulating power plant.

研究结果为燃气蒸汽联合循环电厂直流冷却系统中的海生物污染控制提供了一种有效的解决方案。

4·The types and design principles of once-through boiler startup system and steam turbine by-pass system are expounded.

阐述了直流锅炉启动系统与汽轮机旁路系统的型式及设计原则。

5·The method can be applied to a variety of once-through boilers with different capacities and configurations and offer great convenience in varying the system construction and calculating parameters.

该方法可用于各种容量、结构型式的直流锅炉，通用性强，而且改变结构、参数非常简单方便。

单程的

1·The once-through yield of furfuryl alcohol is greater than 90%, and the outlet mixture contains no any unreacted furfural.

糠醇的单程产率在90%以上，出口混合物中没有未反应的糠醛。

2·This paper presents the commecial test results of the FCC unit in Jiu-jiang Refinery by shifting the total recycle operation to once-through operation.

文中介绍了九江炼油厂催化裂化装置将全回炼操作改为单程催化裂化操作的工业试验。

3·The optimum condition is found. The purity of the product is as high as 95%. The once-through yield is 25%.

优化出最佳工艺条件，生产出纯度达95%，单程收率达2 5.5%的优质液蜡产品。