查询词典 valonia

Valonia extract was oxidized by H2O2. The modified valonia tannin was investigated for adsorption removal of copper in aqueous solution. The influences of pH value, initial Cu(superscript 2+) concentration on adsorption capacity of Cu were discussed.

以橡椀栲胶为原料，通过双氧水氧化降解改性，研究水解类橡椀单宁改性后对铜离子溶液的吸附沉淀以及pH值、金属溶液初始浓度对铜离子吸附沉淀容量的影响和规律。

Valonia extract was oxidized by H2O2. The modified valonia tannin was investigated for adsorption removal of copper in aqueous solution. The influences of pH value,initial Cu2+ concentration on adsorption capacity of Cu were discussed.

以橡椀栲胶为原料，通过双氧水氧化降解改性，研究水解类橡椀单宁改性后对铜离子溶液的吸附沉淀以及pH值、金属溶液初始浓度对铜离子吸附沉淀容量的影响和规律。

The result indicated that oxidization of valonia tannin was well-fitted by the Freundlich equation.

结果表明，氧化橡椀单宁对Cu2+的吸附平衡符合Freundlich方程。

Condensed tannin-larch valonia, a kind of nature organic polymolecule and formaldehyde solution and dimethylamine water solution were used as raw materials to complete the Mannich reaction for tannin modification and the production was obtained.

本文以天然有机高分子化合物——落叶松栲胶为原料，用甲醛、二甲胺通过曼尼希反应对其中的缩合类单宁进行阳离子化改性，制得阳离子单宁。

The crystal structure of BC in dried and wet states is studied by FT-IR, X-ray diffractometry and CP/MAS solid-state^13C NMR The cellulose Ⅰ(subscript α) and crystallinity index of the bacterial cellulose in dried state are very high compared with the other native cellulose such as cotton and Valonia.

用傅立叶红外光谱、广角X射线衍射、交叉极化／魔角旋转固体核磁共振(CP/MAS^13CNMR)分析细菌纤维素在干态下和湿态下的晶体结构。

The result indicated that oxidization of valonia tannin was well-fitted by the Freundlich equation.

结果表明，氧化橡椀单宁对Cu(上标 2+)的吸附平衡符合Freundlich方程。

The cellulose Iα and crystallinity index of the bacterial cellulose in dried state are very high compared with the other native cellulose such as cotton and Valonia.In wet state,the BC shows no X-ray diffraction and NMR of cellulos...

在干态下，细菌纤维素有较高的结晶指数和较高的纤维素Iα；而湿态下的细菌纤维素没有显示出纤维素I晶型的X射线衍射特征峰和核磁共振图谱，结晶指数和晶粒尺寸都相对较小。

We are forbidden from giving money to these shoeless, skinny children, as this will perpetuate begging.

向光着脚，骨瘦如柴的孩子施舍是不可以的，因为要招来无休无止的乞讨。

It would be hard not to fall victim to some sharpeyed policeman.

要想不被某个目光锐利的警察抓到，谈何容易。