A new returnable actuator disk of metal seal structure butterfly valve was presented, and its principle, force analysis, characteristic of the actuator were discussed as well.
提出了一种双向压金属硬密封蝶阀蝶板可逆回转机构，讨论了可逆回转机构的工作原理、受力分析及特点。
Based on the force analysis of single bubble movement and movement characteristic research of many bubbles in random time section, the mathematics modeling of many bubbles movement was built up.
在对水下单气泡运动受力分析及任意时间剖面多气泡运动特性研究的基础上，建立了水下气泡群运动数学模型。
The restoring force model and the method for dealing with the characteristic value are also given, which can be applied to the elastoplastic dynamic analysis.
还给出恢复力模型及其特征点的取值方法，可进行底部框架抗震墙砖房的弹塑性动力分析。
Based on the analysis of tapping force system and characteristic of chip removal, it is confirmed that radial force, axial force and jam of chip removal are the main reasons for poor thread quality.
通过对攻丝切削力和丝锥排屑特点的分析，确定径向力、轴向力和排屑不畅是影响攻丝质量的主要因素。
It can also be used for measuring the characteristic parameters of swimmers and producing the force waveforms of various competitive strokes for technical analysis.
该训练器还可用作测试仪器，可测出运动员的特征参数，并给出各种泳法的力波形图，借以进行游泳技术的诊断。
They are tested firstly in testing saw with intent to analysis the force, power and dynamic characteristic, then put into operation in medium section mill for checking their performances.
首先在试验锯机上进行了中间试验，对各种锯片的力能参数、动态特性参数作了测试分析；然后又在现场进行了工业试验，考核了各种锯片的使用性能。
They are tested firstly in testing saw with intent to analysis the force, power and dynamic characteristic, then put into operation in medium section mill for checking their performances.
首先在试验锯机上进行了中间试验，对各种锯片的力能参数、动态特性参数作了测试分析；然后又在现场进行了工业试验，考核了各种锯片的使用性能。
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