您要查找的是不是：
- PVP/vanadium precursor composite microspheres PVP／钒前驱体复合微球
- Study on the Precursor Composition of CuO-ZnO-CrO_X-Al_2O_3 Catalyst and Decomposition Behavior by Thermoanalysis Method CuO-ZnO-CrO_X-Al_2O_3催化剂前驱体组成及分解的热分析研究
- He sweated out his composition in several hours. 他苦干了几个小时才写出了作文。
- The precursor of the modern car was a horseless carriage with a petrol engine. 现代汽车的前身是不用马拉的，装有汽油发动机的车子。
- He wrote a composition or (he) read an essay. 他写作文或读散文。
- His composition is far superior to mine. 他的作文比我的好多了。
- A slow, mournful musical composition. 庄重悲哀的乐曲节奏缓慢，庄重悲哀的音乐作品
- He has a touch of madness in his composition. 他有点疯疯癫癫。
- I'd like to have your advice on my composition. 我想请您对我的作文作些指导。
- Thefirst telephone was the precursor of modern communications networks. 最早出现的电话是现代通讯网的雏型。
- She looked at her son's composition with a frown. 她对儿子的作文皱眉头。
- The composition of the report took two months. 写这份报告花了两个月时间。
- The precursor or stem cell of a plasma cell. 成浆细胞浆细胞的前体细胞或干细胞
- We examined the rock to find out its composition. 我们检验了这一石块,想弄清它的构成成分。
- He has a touch of stubbornness in his composition. 他脾气有点倔。
- A precursor cell of a melanocyte or melanophore. 成黑素细胞产生黑素细胞的母体细胞
- You've made several grammatical mistakes in the composition. 你的作文中犯了几处语法错误。
- Error is often the precursor of what is correct. 错误常常是正确的先导。
- A composition in verse rather than in prose. 诗篇以诗歌而非散文形式的文章
- A composition written or arranged for these bells. 钟乐为在排钟或钟琴上演奏而谱的曲
