It is special important meaning that Deep - hole blasting With bottom Gap Charging is used to protect bottom rock from breaking, to decrease block ratio and to improve blasting efficiency.

深孔爆破孔底空隙装药在有效地保护底板岩层免遭破坏，减少大块率，提高爆破效率等方面均具有重要的意义。

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Filler must be well filled in order to minimize the gap, good contact between a single block of stone, as much as possible to fill in tight, stone cage to reduce the possibility of moving the stone.

填料必须填写，以减少差距，一块石头之间的良好接触，尽可能填写紧，石笼减少搬石头的可能性。

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Magnetic working substance area is circular arc with certain radial thickness, and has certain gap with stator permanent magnetism block.

磁工质区域为圆弧形，有一定的径向厚度，与定子永磁块间留有一定的间隙。

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McCollough walks away after spearheading a drive to move or refurbish a block of Circuit City stores, an effort designed to close a quality gap a with Best Buy franchise seen as having better locations, brighter and less cluttered stores, and top-of-the-line service led by its famed Geek Squad customer support operation.

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