《表1 砂芯的抗弯强度测试结果Tab.1 Bending strength test results of sand cores》

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表3 劈裂抗拉、抗压强度的试验结果Table 3 Test results of splitting tensile strength and compressive strength

表5 不同部位对粘结强度影响的检测结果Table 5 Test results on the impact of different parts on bond strength

Table 5:Tensile strength of sand core with optimal proportion (MPa)

表5 单台缸盖进、排气道砂芯材料成本对比Tab.5 Intake and exhaust channel sand core material cost comparwason of cylinder heads per engine

表5 表面及芯部硬度测试结果Tab.5 Test results of surface and core hardness

表4 水泥土无侧限抗压强度测试结果Tab.4 Unconfined compressive strength test results of cement soil