His cheerfulness made everyone feel better.

and the cheerfulness of the children added a to his existence.

而那些天真烂漫的孩子也给他的生活增添了乐趣。

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The new compositions frequently lacked the cheerfulness of the classical period.

这种新的作品往往缺乏古典主义时期那种明快感。

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Health is the condition of wisdom and the sign of cheerfulness.

健康是智慧的条件，快乐的表现。

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Cheerfulness is one of his characteristics.

外向是他的特征之一。

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Therefore, it's important to adjust our mood toward cheerfulness.

因此，重要的是要调整我们的心情。

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Show cheerfulness even when you don't feel it.

即使没有感觉到也要表现出自己的愉快心情。

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The characteristic I like best in him is his cheerfulness.

他的愉悦气质是我最喜欢的特点。

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But the variance of medium flow rate may affect the stability of check valve.

但介质流量的变化会给止回阀的稳定性带来影响。

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Designing of bypass control part for check valve

空排止回阀旁路控制部分设计

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Structure design check valve used for nuclear-grade natural circling system

核级自然循环系统止回阀的结构设计

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To introduce the structure, performance and design of the differential stop check valve.

介绍了差压式截止止回阀的结构、性能和设计要点。

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Improvement of check valve of high pressure reciprocating pump for high pressure hydrogenation

高压加氢高压往复泵单向阀的改进

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Characteristic analysis of seal surface of check valve

止回阀密封结构特性

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Proper Application of Pilot Controlled Check Valve in Hydraulic Circuit

液控单向阀在液压回路中的正确使用

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Design and analysis of an electro hydraulic check valve

电控单向阀的设计与分析

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Application characteristics analysis and calculation of hydraulically operated check valve

液控单向阀的应用特性分析与计算

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Discussion on the inner-leakage problem of check valve

止回阀内漏问题的探讨

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Water hammer of pipeline influence the check valve design

管道水击现象对止回阀设计的影响

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Visual Analysis of Tri-dimensional Flow Characteristics of Hydraulic Controlled Check Valve

液控单向阀三维流动特性可视化分析

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The analysis on characteristic of open to air check valve for high pressure feed water system

高压给水空排止回阀特性分析

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