A wider trail tread of 10 ft to as much as 16 ft was adopted and, in some places, several parallel trail treads were specified with separate lanes for each type of user.
更宽的步行道路面采用10英尺到16英尺，在一些地段上，用相互分离的平行车道来区分不同的使用者。
FIG. 12 illustrates a timber double post roof truss. This type of truss is constructed where a wider span or a less restricted roof space is required.
图12所示为一个双柱木屋顶桁架。这种桁架主要建于跨度要求较大或屋顶空间限制较少的地方。
The key to a wider use of this type of technology is to developing biomass gasification technology and to reducing cost of production.
另一种是以生物质原料通过气化合成生产汽油、喷气燃料和柴油，重点是开发生物质气化技术，降低生产成本。
The key to a wider use of this type of technology is to developing biomass gasification technology and to reducing cost of production.
另一种是以生物质原料通过气化合成生产汽油、喷气燃料和柴油，重点是开发生物质气化技术，降低生产成本。
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