搜索 - 科创

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由甲酰胺乙二醛制备DFTHP理论部分在上篇文章中已经介绍，这里便不再赘述。制备路线如图所示原料准备：根据反应方程式可知甲酰胺和乙二醛发生Mannich缩合反应在碱性条件下，2mol甲酰胺和2mol乙二...

引用第16楼火箭爱好者于2010-08-06 11:32发表的 :还有，我拿来搞能材~~~~~~~~ 我刚刚去采购，看见货架上摆着三个跟LZ的苦味酸一样包装的蓝色小瓶。定睛一看，真的是苦味酸。出于好...

如果只需要判断有没有人，不需要数人数的话，微波多普勒应该也行。之前和同学试过，给一个淘宝买的10.5g多普勒模块接一个低噪声的运放。就能做到在一个大约100平米的房间里，只要有人在随便什么位置挥挥手，...

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