下型 meaning in English
mold bottom half
mold drag
Examples
- Infracristal ventricular septal defect
嵴下型室间隔缺损 - Internal fixation and guteus medius - bone flap transplantation for the treatment of young sub - capitated femoral neck fracture
内固定加臀中肌骨瓣转移治疗青壮年头下型股骨颈骨折 - Treatment of young adult subcapital femoral neck fracture with vascular bundle transplantation and sartorius muscle pedicled iliac graft assisted with internal fixation
血管束植入加缝匠肌骨瓣内固定治疗青壮年股骨颈头下型骨折 - The social significance and development situation of fcp was described , the basic principle of present fcp processes and process methods was analyzed , and their existing normal problems were discussed including : requirements for ice pattern , ice pattern making method , properties the mold shell and molding materials should have under the condition of freezing , choice of the materials and their treating process
本文阐述冷冻铸造技术的社会意义，介绍冷冻铸造的发展状况，并分析目前发展中的各种冷冻铸造技术的基本工艺原理和工艺方法，讨论其存在的基本问题，包括冷冻铸造对冰模的基本要求、冰模的制作方法、在冷冻条件下型壳及造型材料所应具有的性能、材料的选择和处理工艺。 - The method of prediction the discharge coefficients of film cooling holes on the turbine blade suggested by d . a . rowbury et . al has been improved in this paper to fit the computations in the cases of low pressure ratios and the holes in leading edge region especially . the effects of external cross - flow , hole geometry and reynolds number in the hole were taken into account . an additive loss coefficient method is subsequently applied to the test data in order to assess the effect of the external cross - flow
Rowbury等提出的流量系数工程算法进行了改进，计算结果和实验数据的比较表明改进后的新模型使低吹风比和前缘驻点附近流量系数的计算得到了明显的改进，而在高吹风比下仍能保持与实验数据相符，这种算法有可能成为低压比情况下型面气膜冷却的一种通用设计方法。