sodium tetrapolyphosphate

The die could absolutely replace the expensive machine for forming the pot body with three neckings.

介绍了一种借助蜗杆凸轮驱动工作转盘作间歇运动的机构 ,逐次完成送料、首次缩颈、二次缩颈、取料4个工作程序 ,可完全替代昂贵的三缩颈罐身成形机械的三缩颈罐身二缩颈级进成形模

Solvent-stabilized palladium nanoparticles were prepared in tetraethylene glycol, the nanoparticles so-prepared were narrowly dispersed with dimension of ()2~3 nm.

用三缩四乙二醇作溶剂,制备了溶剂稳定的钯金属纳米颗粒,得到了分布均匀、粒径在2~3 nm范围内的钯金属纳米颗粒。

Solvent-stabilized palladium nanoparticles were prepared in tetraethylene glycol.

为采用钯金属纳米颗粒进行有机催化反应打下良好基础 ,采用了三缩四乙二醇作溶剂 ,制备了溶剂稳定的钯金属纳米颗粒 ,得到了分布比较均匀且粒径在 2～ 3nm范围内的钯金属纳米颗粒 。