Calcium cyanamide is poisonous and irritating to the skin.氰氨化钙是毒性物质,对皮肤有刺激性.A new process, urea - calcium cyanamide method, for producing thiourea from urea and hydrogen sulfide is proposed.利用尿素和硫化氢等原料制备硫脲, 提出了尿素 - 氰氨化钙法...
This determinant is a special case of the resultant of two polynomials.这个行列式是两个行列式的结式的特殊情形.The main stem and fruiting branches of determinant types remain relatively short.有限生长类型的主茎和果枝仍然较短.The determinant can be evaluate...
Commercial cellulase, hemicellulase and pectinase were applied to hydrolyze sugar cane bagasse.应用纤维素酶 、 半纤维素酶和果胶酶水解蔗渣.Methods: To extract ginsenosides from folium ginseng by adding cellulase digestion process.目的: 通过星点设计-...
You have to develop your capabilities to the maximum.你必须尽你所能。I hadn't been far wrong in my estimate of his grandson's capabilities.我对他孙子的能力的判断还不算太离谱。The standards set four years ago in Seoul will be far below t...