For the medium sand system of the low ammonia nitrogen, by shortening HLC, the removal effect of the system is significantly improved.
对中砂的中低氨氮进水系统，通过缩短水力负荷周期，会使去除效果得到明显改善。
Properties of the green sand and the surface quality of the casting may be decreased due to the resin sand of cold box cores entering the green sand system.
冷芯盒树脂砂进入湿型砂系统会使湿型砂性能和铸件表面质量下降。
The active and dead bentonite contents in green sand system have great effect on the sand properties, but it is very difficult to measure them in actual shop.
型砂系统中的有效膨润土和失效膨润土含量对其性能有很大影响，而生产中对这两个参数的检测比较困难。
There is a huge tidal sand system which is composed of the old sand body distributing in the coastal plain and the radial sand ridge distributing in south Huanghai Sea.
苏北陆区古潮成沙体和海域辐射沙洲共同构成了统一的苏北南黄海潮成沙洲体系。
This research mainly explores the production of steel castings with air flush molding green sand and the improvement of its character from the molding sand recipe and mold sand system control.
本研究主要探讨了用气冲造型湿型砂来生产铁路钩缓铸钢件，从型砂的配方和型砂系统的控制等几个方面来优化其性能。
This research mainly explores the production of steel castings with air flush molding green sand and the improvement of its character from the molding sand recipe and mold sand system control.
本研究主要探讨了用气冲造型湿型砂来生产铁路钩缓铸钢件，从型砂的配方和型砂系统的控制等几个方面来优化其性能。
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