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1·He has prepared a special core sand and solved the problem of cleaning blind holes successfully.

配制了专用芯砂，成功地解决了异型盲孔的清砂问题。

2·All I need to do is scrape this core sand out and there will be a nice straight bore through the casting.

所有我需要做的就是这个核心刮砂的，将有一个很好的通过铸造直孔。

3·The results show that the process is a clean process of mold and core sand foundry and does not pollute environment.

实验结果表明，该工艺不污染环境，是铸造型芯砂的清洁生产工艺。

4·Veining defects have been effectively prevented and eliminated by improvement on gating system, especially by special additive to core sand and sinter coating on surface of sand core.

通过改进浇注系统，特别是采取在进、排气道芯砂中添加特殊抗脉纹添加剂及在砂芯表面涂刷烧结型涂料等工艺，有效地预防和消除了脉纹缺陷。

5·Cultured pearls don’t have at their core a grain of sand, but instead arelittle plastic or glass beads or something that pearl farmers stick into theoyster for a year or so.

对于人工养殖的珍珠而言，它们的核心并不是沙粒，而是像小塑料珠或小玻璃珠之类的物体。 珍珠养殖者把这些小东西塞到牡蛎中，然后等上一年左右的时间。

6·The resin sand with high collapsibility is chosen to make the core of the near closed hollow ring on the basis of many technological experimentations through analysis of structure and process.

通过结构分析和工艺分析，在大量工艺试验的基础上，选用高溃散性树脂砂制作型芯，并成功地研制出大型薄壁复杂结构的封闭型腔铸件。

7·If a hollow casting is to be made the pattern will include extension pieces so that Spaces to accept the sand core are molded into the sand. These additional Spaces in the mold are termed core prints.

如果铸造空心铸件时模型上包含伸长杆便于在砂中放置砂芯的空间称为型芯座。

8·This paper introduces the craft characteristics of casting the shell of the gearbox, including the manufacturing of the resin moulding, the application of the hard sand core and so on.

针对变速箱壳体毛坯铸造的工艺特点，介绍了其树脂模具的制造、树脂自硬砂砂芯应用等关键环节的技巧和做法。

9·Companies are integrated enterprises, the main core for the building or real estate, the provision of gravel, sand, brick machine, quarry and transport.

公司属综合性企业，为主要核心建筑或房地产，提供砂石、河沙、机砖、石矿及运输。

10·Research has believed that veining in admission and exhaust passage of diesel engine cylinder head may mainly be caused by crack of sand core occurring in high temperature phase change expansion.

研究认为，柴油机气缸盖进、排气道脉纹的产生主要是由硅砂高温发生相变膨胀导致砂芯开裂引起的。