"subbase," CNS Standards List |
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CNS 15358
2021 Edition Standard specification for graded aggregate material for bases or subbases for highways or airports 公路或機場底層、基層用碎石級配粒料 |
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CNS 15305
2019 Edition Materials for soil-aggregate subbase, base, and surface courses 級配粒料基層、底層及面層用材料 |
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