Results The surface roughness of the gradual composite materials was significantly higher than that of the control materials(P<0.01).
结果梯度复合材料的表面粗糙度明显高于对照材料（P＜0．01）；
Control of fluid loss for a mud is achieved by several means, one of which is by addition of fluid-loss-control materials to the mud system.
可以通过几种方法控制泥浆滤失，其中一种方法是在泥浆中加入降滤失材料。
Its sand control effect is much better when high pressure filling is made along with sand control materials, hence increasing oil productivity and reducing recovery cost.
配合防砂材料进行高压填充，防砂效果更为明显，因此，提高了油井产量，降低了采油成本。
The bonding strength between CFPEEK and bone is higher than that of control materials. The histological results displayed that the biological fixation can be got in the CFPEEK-bone interface.
骨的界面结合强度明显优于传统人工关节材料，组织学显示CFPEEK能与骨形成良好的生物学固定。
The bonding strength between CFPEEK and bone is higher than that of control materials. The histological results displayed that the biological fixation can be got in the CFPEEK-bone interface.
骨的界面结合强度明显优于传统人工关节材料，组织学显示CFPEEK能与骨形成良好的生物学固定。
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