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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Double-block ballastless track applied on PDL is a new track structure. It is a low maintenance durable track structure with high stability, high geometric regularity and uniform track stiffness.

双块式无碴轨道是一种适用于客运专线的新型轨道结构，它具有高平顺性、高稳定性、刚度均匀性好、结构耐久性强和少维修的特点。

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The paper briefly summarized the current situation and advancement of double block copolymer as pigment dispersant for water-borne coatings.

简要概述双嵌段共聚物作为水性涂料用颜料分散剂的现状及进展。

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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