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1·The results show that, impulse and impulse coupling coefficient firstly increase and then decrease with the augment of the dimensionless factor when cone angle is fixed;

结果表明：当锥角固定时，冲量和冲量耦合系数随无量纲因子先增大后减小，极大值对应的无量纲因子仅与气体比热比相关；

2·However, the calibration of the dimensionless stress intensity factor, which is an important mechanical parameter, is still in question.

但是，该试样的重要力学参数即无量纲应力强度因子的标定尚有问题。

3·The dimensionless average formation pseudo pressure is directly proportional to the dimensionless producing time if the influence of wellbore storage coefficient and skin factor is neglected.

在不考虑井筒储集系数和表皮系数影响的情况下，无量纲平均地层拟压力与无量纲生产时间成正比。

4·Our 3D BEM(Boundary Element Method) calculation shows that the larger the notch width is, the bigger the error makes for the dimensionless stress intensity factor.

通过三维边界元计算分析表明，切槽宽度越大，无量纲应力强度因子的标定值就越大；

5·On the basis, the influence of dimensionless apparent permeability variation factor and mobility ratio to pressure behavior has been analyzed.

在此基础上，分析无因次表观渗透率变化系数和流度比对压力动态的影响。

6·And based on the relations of compressibility factor and viscosity of the gas versus pressure, the relations of these parameters versus dimensionless pressure are also built.

同时通过对气体压缩因子、黏度随压力、温度的变化，建立了这些参数和无因次压力的关系；

7·On the basis, the influence of dimensionless apparent permeability variation factor to flow performance has been analyzed.

在此基础上，分析无因次表观渗透率变化系数和边界条件对产量动态的影响。

8·The influences of dimensionless permeability modulus and skin factor on pressure response are discussed.

讨论了无因次渗透率模数和表皮系数对压力响应的影响。

9·Dimensionless dry friction damping factor is defined to measure the effect of dry friction damping, Finally, according to designed method, a vibration experiment of shrouded blades is carried out.

最后，按照设计的实验方案，对带凸肩叶片组试件做了振动实验研究。