求翻译：针对铸造铝活塞销座上方在铸造过程中会形成缩松孔洞问题，根据孔洞的形成原因，从模具设计的优化、铸造设备的配置以及铸造工艺的改进等多方面入手，经过实际生产验证，提出五种解决方案，有效地解决销座孔洞问题, 最终使产品质量达到满足产品技术要求的目的。是什么意思？

For casting aluminum above the piston pin shrinkage holes problem in the casting process, mold design optimization, casting equipment configuration, and improved casting process according to the reasons for the formation of the holes from the multi-pronged approach, production-proven, proposed five

For cast aluminum piston pin above the seat in the casting process, holes will form a scale, based on the holes from the mold, a reason for the design optimization, casting the configuration of the device as well as casting process, and many other improvements that were made by actual production-pro

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Above the block for casting aluminum piston pin hole problem in formation of shrinkage porosity in the casting process, based on the cause of the hole, from the mold design optimization, configuration and improvement of casting technology of foundry equipment, multi-pronged approach, after actual pr

Can form in view of the casting aluminum biston boss above in the casting process shrinks the loose hole question, according to the hole formation reason, optimized, the casting equipment disposition as well as the casting craft improvement which designs from the mold and so on various obtaining, pa