metal-free
英 [ˈmetl friː]
美 [ˈmetl friː]
adj. 不含金属的
双语例句
- While the blue cloud is metal-free, according to spectral measurements, the color of the rest of the galaxy is consistent with more evolved stars making up most of its mass.
虽然根据光谱测量，这个蓝色星云不包含金属元素，但该星系剩余部分的颜色与演化程度较高的、构成其大部分质量的恒星一致。 - The induction loop is installed in the bottom of the empty pallet feeding station and the bedding area of the induction loop must be metal-free.
该环线感应系统安装在空托盘补给站的底部，并且环线感应系统的垫层区域必须是不含金属的。 - Study on Chemical State of Sulfur Impurity in Metal-free Phthalocyanine by XRF Spectrometry
高分辨双晶XRF研究酞菁化合物中硫杂质的化学态 - Metal-Free Initiator/ Catalyst Systems for the Ring Opening Polymerization of Cyclic Ester Monomers
用于环酯单体开环聚合的无金属引发/催化体系 - Green propellants and explosives include clean rocket propellants, lead-free double base propellants, TPE based gun propellants, nontoxic gun propellants and heavy metal-free ignition agents and primary explosives.
绿色火炸药包括洁净固体推进剂、无铅双基推进剂、TPE发射药、无毒发射药、无铅点火药和起爆药。 - According to the metal atoms within hydrogenase, it can be classified as NiFe-hydrogenase, Fe-hydrogenase and metal-free hydrogenase.
根据氢酶所含的金属元素，可分为NiFe氢酶、Fe氢酶和不含金属元素的metalfree氢酶。 - The recent progress of metal-free initiator/ catalyst systems used for the ROP of cyclic ester monomers is reviewed, including H_2O, alcohol, amine, and carboxylic acid initiators, as well as proton acid, phosphine and N-heterocycle catalysts.
综述了近年来用于环酯单体开环聚合的无金属引发/催化体系，主要涉及水、醇、胺、羧酸等引发剂及质子酸、膦类、氮杂环类化合物等催化剂体系。 - There are three classes of hydrogenase: ( NiFe) hydrogenase, ( Fe) hydrogenase and metal-free hydrogenase.
氢化酶可以分为NiFe氢化酶、Fe氢化酶及无金属氢化酶。 - It also worth noting that the conformation of the Co(ⅱ)-substituted enzyme is similar to the native enzyme, and this may be the reason for restoring of the enzymatic activity of metal-free apoenzyme upon the addition of Co(ⅱ) ion.
脱辅基酶与Co（Ⅱ）离子结合，酶的主链构象恢复至与天然酶几近相同。可认为这是促使酶复活的内在因素。 - The important features of the methodology are metal-free catalyst, high yields, simple operation, and no requirement for additive and avoiding the use of odor substrates such as thiols.
该反应具有无金属催化、产率高、操作简单、不需要任何添加剂、避免了传统的硫化试剂&硫酚（醇）等恶臭原料的使用等优点。 - This result indicated that there is a critical value in nitrogen content or carbon surface basicity, which when exceeded results in an unprecedented metal-free catalytic activity for H2S oxidation.
这一实验结果表明氮含量或催化剂表面碱度有一个严格的临界值。 - However, the origin magnetism of such d0 materials is complex, and is different from the normal magnetization. The related research indicates that magnetism can also be induced by impurities and adsorptions of the metal-free atoms.
若要追究这些d0元素材料的磁性成因却又是十分复杂，不同于以往材料的磁化行为，研究表明非金属原子掺杂和吸附也能使这些材料诱发磁性。 - Recently, asymmetric organic catalysis has been the most important and interesting research topic in organic chemistry because of metal-free, environmentally benign and high atom economy.
近年来，有机不对称催化由于其无需金属参与，对环境友好，原子经济性较高，越来越受到有机化学家的关注。 - The formulations of ceramic friction materials are metal-free raw materials which can well solve the problems of corrosion and friction noise of semi-metal and cast iron materials. So, ceramic materials have been given much attention in the friction material study in many countries.
其中陶瓷型摩擦材料配方为无金属或少金属原材料，能够很好解决半金属及铸铁材料的锈蚀、摩擦噪音等问题，因而得到了各国摩擦材料研究领域的重视。 - Photosensitizer, which including metal complex and metal-free organic dyes, is one of the important part of DSCs.
光敏染料是DSCs的重要组成部分，主要分为钌等金属配合物染料和纯有机染料。 - It is a most effective way to develop DSSCs by using simple and varied structures, easy of design and synthesis, and inexpensive metal-free organic dyes instead of the noble ruthenium complexes.
利用结构简单多样、易于设计、合成简单、低成本的有机敏化染料代替贵金属钌配合物染料用于DSSCs，成为发展DSSCs最为有效的途径。