levortary,levogyral,left-handed (thread and the like),levogyric,laevorotatory(e),levorotatory(a),rotating anti-clock wise,sinistrorotatory是什么意思

网络释义

用法例句

This thread combined laevogyrate thread and dextral thread together in the same part of the thread.

发明了一种新型螺纹—唐氏螺纹，这种螺纹采用的是变截面非完整螺纹，并且将左旋和右旋螺旋线复合 在同一段螺旋线上，具有左、右放螺纹的特点，可分别与左、右旋螺纹配合。

Optical Purity Analysis of Levodopa Drug by Capillary Electrophoresis;

毛细管电泳法测定左旋多巴药片的光学纯度

Preparation and the influencing factors of Levodopa Liposomes;

左旋多巴脂质体的制备及影响因素

Study on the Determination of Levodopa by Flow-Injection Electrogenerated Chemiluminescence;

流动注射电化学发光分析法测定左旋多巴的研究

A kind of biodegradable material poly (L-lactic acid)-polyethylene glycol (L-PLEG) was synthesized directly via melt polycondensation process with taking L-lactic acid (L-LA) and polyethylene glycol (PEG) having number average relative molecular mass (M_n) 1000 as raw materials.

直接以左旋乳酸(L-LA)单体和数均分子量为1000的聚乙二醇(PEG)为原料,通过直接熔融共聚法,合成了聚乳酸-聚乙二醇(L-PLEG)适宜的工艺条件为：以SnO为催化剂[m(SnO)/m(L-LA)为0。

Electrochemical and Spectrometric Studies on the Catalytic Effect of Aluminum on the Oxidation of Dopamine and L-Dopa;

铝对多巴胺和左旋多巴氧化的化学催化作用的电化学和光谱学研究

Studies on the Synthesis of Schiff Bases of L-DOPA;

左旋多巴胺希夫碱的合成研究

Optimization of L-DOPA synthesis by recombinant E.coli;

重组大肠杆菌合成左旋多巴条件的优化