试验结果表明，桨、舵球间距的变化对螺旋桨敞水效率的影响是明显的。
The test results indicated that the variation of the spacing between propeller and rudder bulb has obvious effect on propeller open water efficiency.
悬浮液中的胶体球在一定条件下能够自组装成二维胶体晶体，以此为掩膜可合成纳米颗粒阵列体系，其颗粒形状、尺寸以及间距等参数易于控制。
In the nanoparticle array synthesized by taking the colloid crystal as the lithography mask, the shapes, sizes, spacing and even compositions of the particles can be controlled easily.
结果表明：适当提高球化退火温度，可获得碳化物粒子尺寸及间距均较大的球化退火组织。
The results show that the spheroidal annealing structure in which the size and spacing of carbide particles are bigger can he gained through suitably rising the spheroidal annealing temperature.
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