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- But the change of roasted strength is obvious.Therefore,nitronaphthalene has great effect on promoting pitch carbonization. 由此可见,硝基萘对促进热态自流修补料中沥青的碳化起着积极的作用。
- Spinnable mesophase pitch was prepared from catalytic cracking residue of petroleum and uniform mesophase pitch carbon fibre (MPPCF) was obtained. 以石油系催化裂化渣油为原料，调制出可纺性的中间相沥青，并纺出均匀的中间相沥青纤维。
- Spinnable mesophase pitch was prepared ftom catalytic cracking residus of petroleum and uniform mesophase pitch carbon fibre (MPPCF) was obtained. 以石油系催化裂化渣油为原料，调制出可纺性的中间相沥青，并纺出均匀的中间相沥青纤维。
- The large diameter mesophase pitch carbon monofiber in uniform size was obtained by controlling the matching of extrusion flow and drawing rate. 熔纺时控制了挤出流量和牵伸速率的良好匹配,获得了丝径均匀的大直径中间相沥青炭单丝。
- Compared with the pure pitches, pyridine borane modified pitches had higher softening points, carbon yields and PI fraction content at the same reaction conditions. 在同一反应条件下,体系有无吡啶硼烷,所得结果有显著差别。吡啶硼烷改性系列的软化点、残炭值及PI组份的含量均明显高于纯沥青系列。
- The optical anisotropy from organisms like the pitch carbonized is called mesophase, which owns the properties like the liquid crystal. 沥青类有机物在碳化过程中生成的光学各向异性体称为中间相，具有类似液晶的性质。
- It was pure luck that he was home when we called. 非常幸运，我们打电话时他在家里。
- She has keyed the piano up to concert pitch. 她已经把钢琴的音调升到音乐会的音高标准。
- The runner went to second base on a wild pitch. 一记瞎设让跑垒员跑上了第二垒。
- I have the pure heart of a newborn baby. 我有一颗赤子之心。
- We must not condemn her on pure supposition. 我们不能单凭猜测就谴责她。
- The coach built the team up to a fighting pitch. 教练使全队振作起来，准备一搏。
- The pitcher tends to pitch the ball too high. 这个投球手常把球掷得过高。
- Don't believe what he's saying it's pure bunkum. 别相信他的话--纯粹是胡说八道。
- A long hot bath can be pure luxury. 洗个痛快的热水澡可真是一种至高的享受。
- They that touch pitch will be defiled. 近墨者黑。
- The fields were all covered with pure white snow. 白雪皑皑，铺满田野。
- We planned to pitch our camps in the mountains. 我们计划在山里扎营。
- The speaker brought the crowd to fever pitch. 演讲者激起群众高昂的情绪。
- The condition or quality of being pure or chaste. 纯洁纯洁或贞洁的状况或者品质
