Recycling of waste concrete is still in the pilot phase of exploration in our country, testing research of recycled concrete has important theoretical and practical value.
废弃混凝土的再生利用在我国还处于探索试验阶段，对再生混凝土进行试验研究具有重要的理论意义和实用价值。
But some proliferous services such as accessory distribution, logistics information services are still in the phase of exploration and attempt.
零部件配送、物流信息服务等增值服务仍处于探索和尝试阶段。
But some proliferous services such as accessory distribution, logistics information services are still in the phase of exploration and attempt.
零部件配送、物流信息服务等增值服务仍处于探索和尝试阶段。
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