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a further decision which greatly influences production costs concerns the size of mould unit to be adpoted and the arrangement of patterns in relation to mould dimensions.the object should be to employ the largest size of mould that can be conveniently handled by the plant,and to achieve intensive used of mould space through a high packing desity of castings .this reduces the number of moulding operations and minimizes sand consumption.these objectives are achieved by the use ,whenever possible,of multipie-casting molds in which two or more patterns are grouped round a common sprue or feeding system,or in which mould parts are stacked to produce super imposed layer of castings.in the case of stack moulding it is sometimes possible for the back of one mould part to form the face of the next as shown in figure 9,virtually halving the number of mould part required.where such parts carry impressions on both faces they may be produced by machine squeezing between two pattern plates.a further advantage of such systems is the possibility of improved casting yields through the sharing of feeder heads and gating systems
非常影响制造费用关心模子单位的大小是 和式样的安排较进一步的决定关于铸成 .物体应该是雇用能方便地被植物处理的模子最大大小, 和达成强烈的模子用隔开过一高度地包装铸件的 这减少模制操作的数字而且将沙子 目的减到最少被使用达成 , 每当可能的, 投掷多派模子在哪一二或较多的式样被聚集把一个通常的注入口或逐渐强烈的系统弄圆, 或在哪一模子部份被堆积生产 的超级强加层堆叠模制的情形它有时部份地对一个模子的背面是可能的形成如图 9 所显示的下一个的脸, 事实上二等分在两者的脸上模子部份 的数字如此的部份进位印象他们可能被在二式样 之间挤压较进一步的如此系统的利益机器生产是改良的经过饲养者头的分享人投生产量而且禁足系统的可能性。 我的能力有限只能翻译成这样了，希望对你有点帮助。
进一步决定,这大大影响生产成本是规模工单位要采用和安排模式与模式Dimensions.那对象应采用大面积倒可以方便处理厂,并取得广泛采用的模式空间通过高包装电流的密度. 这减少浇铸作业,减少沙子的消费.这些目标是实现用尽可能的用多样化的播模具,有两个或两个以上的模式分为回合共同扩展或流入系统,或在铸模部分闲置生产超级施加一层铸件.在管浇铸有时可能背后 一模部分组成,面对下一个像第九个图形一样,几乎一半的铸模部分是需要的.这些地区传送印象到两面。他们也许是用机器挤在两个花纹的图板制作而成的。一个更好的优势就是有机会改进铸件生产通过共享支流和门控系统。 不只对不对，是哪一行的翻译？（哪一种职业？）
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