包括溶区的划分，溶区长、宽的重新确定；溶区间的下山布置，以及打眼巷、切割槽的改进等。
It includes the division of dissolving area, the redetermination of its length and width, downhill layout of dissolving area a nd improvement of drilling tunnel and cutting grooves.
并且，石油工业已经开发出可用于海底管道挖槽的遥控船，可以经过改造用来切割矿石，即使这些矿石在1.5千米以下也没问题。
The oil industry has also developed remotely-operated vehicles to make trenches for seabed pipelines, which can be adapted for cutting ore, even though it may lie much deeper, at, say, 1.5km down.
独特的雁尾槽设计，使得轨道系统牢固地托起动力单元座，使切割精度大大提高。
The track system trolley features a unique dovetail mounting design which securely holds the power unit base in position for maximum accuracy.
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