激光功率对聚己内酯基人工骨支架的影响

采用羟基磷灰石(HAP)和聚己内酯(PCL)作为原料,将HAP/PCL按1∶9的质量比制备HAP/PCL复合材料,打印成型后,测量其力学性能并进行分析研究。结果表明,所制备复合材料可用于选择性激光烧结技术,其烧结制件具有生物相容性并有较高强度。     

乘用车现代化维修企业的设计要点

为适应高水平、高质量的维修要求，本文对新建或改建的乘用车现代化维修企业提出设计要点。     

Numerical simulation of impact of supersonic molecular beam injection on edge localized modes

A three-field model with the impact of supersonic molecular beam injection (SMBI) based on the BOUT++ code is built to simulate edge localized modes (ELMs). Different parameters of SMBI are explored to find an optimal SMBI scenario for ELM mitigation. The linear simulations show that the growth rate of peeling-ballooning mode is reduced by SMBI. The reduction amplitude of the growth rate is increased when the amplitude or width of SMBI is increased, and when SMBI is deposited at the top, bottom and middle of the pedestal, the reduction amplitude increases successively. The nonlinear simulations show that the ELM size is reduced by SMBI. The reduction amplitude of the ELM size is increased when the amplitude or width of SMBI is increased, and when SMBI is deposited at the bottom, top and middle of the pedestal, the reduction amplitude increases successively. Surface-averaged pressure profiles and filamentary structures are analyzed when the ELMs erupt. Deep deposition of SMBI such as at the top and middle of the pedestal reduces the inward collapse amplitude of the pressure profiles, which can improve the confinement efficiency during ELMs. Shallow deposition of SMBI such as at the middle and bottom of the pedestal reduces the outer extent of the filamentary structures, which can slow down the erosion of plasma-facing components caused by ELMs. In conclusion, shallow deposition of SMBI with sufficient amplitude and width can meet the needs of ELM mitigation.     

乘用车现代化维修企业的设计要点

为适应高水平、高质量的维修要求，本文对新建或改建的乘用车现代化维修企业提出设计要点．     

汽车稳定性辅助系统故障检修

通过一辆第七代2.4L雅阁轿车稳定性辅助系统间歇性故障的检修实例,阐述了故障症状,介绍了该车稳定辅助性系统的工作原理和结构,据此进行检修,充分发挥自己理论与经验的优势,运用该系统自我诊断的特点找出故障所在,并进一步对故障进行分析,从而最终解决问题。