Because of the influence of the hull, the stern propeller of a twin-screw vessel is working under condition of oblique flow, and the unsteady working condition of the blade of a propeller is created.
由于船体的影响，双桨船的螺旋桨处于斜向来流的条件下运转。斜流造成螺旋桨叶工作状态的非定常性。
2
It is also indicated that pretreatment of rice hull powder under acid condition is helpful to improve its thermostability.
酸性条件下预处理稻壳粉有利于提高其热稳定性。
3
It is also indicated that pretreatment of rice hull powder under acid condition is helpful to improve its thermostabili…