If gravel is used, it usually contains sufficient clay and fine material to help stabilize the surfacing.
如果用了砾石,通常它包含了足够的粘土和细密的材料以帮助路面的稳定。
While part of the process involves conventional craftsmanship - moulding clay - this is not presented as sufficient.
虽然这一进程的一部分涉及到传统工艺-模粘土-这是没有提供足够的。
Results from the test indicated a clay substitute was sufficient to control clays welling.
测试结果表明,一种黏土替代物可以有效地抑制黏土膨胀。
Results from the test indicated a clay substitute was sufficient to control clays welling.
测试结果表明,一种黏土替代物可以有效地抑制黏土膨胀。
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