This article introduces the construction technological process of a new type of ballastless track, viz. the double-block track and performs a cost analysis of the same.

介绍一种新型无碴轨道形式即双块式无碴轨道的施工工艺过程，并进行造价分析。

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Other RAID levels include RAID-5, which includes block-level striping with distributed parity codes across disks, and RAID-6, which includes block-level striping with double distributed parity.

其他RAID级别包括RAID - 5和RAID - 6, RAID - 5跨磁盘包含分布式奇偶校验码的块级条带化，RAID - 6包含带有双重分布式奇偶校验的块级条带化。

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Note: The only place you need to do a double knot is at the start and finish of the paper block.

备注：在开头和结尾的地方，必须打两个结。

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The launcher shoots the bottles at a velocity of 984 feet per second, fast enough to smash a double-layer breeze-block wall and allow assault troops to enter a building, according to the manufacturer, BCB International.

FORBES: Wacky Weapons #1: Water Cooler Bombs Blow Holes in Walls

Moments before the break Brown produced a great double save to deny Goodwillie and then block Daly's close-range header.

BBC: David Goodwillie scored the winner for United

In "Drivin' Down the Block, " Naledge (the MC) and Double-O (the DJ and producer) have created a sunny anthem where style overwhelms substance, in grand hip-hop tradition.

NPR: Kidz In The Hall: Back To The Summer