On the two internal corners of each half of the sample there is filler and on close inspection this is to fill air holes probably created during casting.
在样品每半部的两个内角中有填充物，通过仔细检查发现是填充可能在铸造时产生的气孔。
2
Intensive sourcing for casting suppliers, Request For Quotation and Sample Purchase Order and first production batch order tracking till samples are tested positive.
详细寻找铸件供应商，得到报价，样件定单和首批生产订单跟踪直到样件检验合格。
3
The result shows that the strength, especially elongation, of adjusted pressure castingsample is increased dramatically under the same conditions of melting and heat treatment.