This paper presents the construction method of reef blasting of Contract Section C1 in Downstream Regulation Engineering of Xijiang River, which may serve as a reference for similar projects.

介绍西江下游航道整治C1合同段蟠龙石炸礁工程施工方法，可为类似工程提供借鉴。

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Article 28 (5) of the REACH Regulation entitles downstream users to contact ECHA and indicate their interest in a missing substance.

REACH法规的第28条第5款规定下游用户有权向ECHA表达他们对没有注册物质的关注。

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These effects are typically downstream consequences of suppression of cellular signalling pathways important in the regulation and maintenance of the microvasculature.

典型地说，这些副作用是调节与维持微脉管系统中重要的细胞信号传导途径受到抑制、下调的结果。

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Although the ice-minus bacteria proved safe and effective at preventing frost damage in field trials, further research and commercialization were discouraged by the combination of onerous government regulation, the inflated expense of doing the experiments and the prospect of huge downstream costs of pesticide registration.

FORBES: Commentary