A simple sample injection technique which can he considered as a simplification of cold on-column injection has been proposed.
本文提出了一种简化的毛细管色谱“冷柱上进样”技术并对其性能进行了研究。
With warm, buoyant water on top and cold, dense water below, the water column doesn't mix easily.
上层水温暖而浓度小，下层水寒冷而浓度大，因此水体难以混合。
Based on the research of steel housing industry, a new outer-shell joint connecting cold-formed square tubular column and H-shaped steel beam with bolts was designed.
结合钢结构住宅产业化的研究，设计了冷弯方钢管与H型钢梁的螺栓连接外套管式节点。
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