wet curing

And the wet curing time had significant effects on the early age shrinkage of mortar.

结果表明:萘系高效减水剂对胶砂试样早期收缩有一定影响,但28d龄期时的收缩值增大了20%—40%;水养护时间对胶砂的收缩变形有明显的影响;掺加有粉煤灰和高效减水剂的低水胶比胶砂,在养护充分的条件下,水胶比小,胶砂的收缩值相对较大。

Circumferential sprinkling water curing technique utilizing rubber perforated pipe in high pier construction;

高墩施工橡胶花管环向洒水养护技术

Removal of inorganic nitrogen from marine aquaculture wastewater circulated by single-stage biological contract oxidation;

单级生物接触氧化法去除海水养殖废水中的无机氮

Nowadays the amount of marine aquaculture wastewater has surpassed the amount of sewage.

当前海水养殖废水的排放量已超过陆源污水,是导致海洋环境不断恶化的重要原因之一。

Marine aquaculture,specially intensive penaeid shrimp pond aquaculture was the new tendency of aquaculture industry recently.

海水养殖,特别是高位虾池养殖是近年来养殖业发展的新趋势,在其带来巨大经济效益的同时,也对周边生态环境带来巨大的威胁和破坏。