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- hard wood tar pitch 硬材沥青
- wood tar pitch 木焦油沥青
- Pine is a soft wood and teak is a hard wood. 松木是软木,柚木是硬木。
- soft wood tar pitch 针叶材焦油沥青,软材焦油沥青,松焦油沥青
- hard wood tar 硬材焦油
- A large drinking bowl or goblet made of metal or hard wood. 大酒碗用金属或硬木做成的大酒碗或酒杯
- West Indian timber tree having very hard wood. 西印度群岛的一种木材,木质非常硬。
- Pine is a soft woodand teak is a hard wood. 松木是软木,柚木是硬木。
- A pitch mesophase can be prepared from petroleum pitch andcoal tar pitch. 从石油沥青和煤沥青中制取沥青中间相物质。
- The stem is made out of a hard wood like padauk or ebony. 琴杆多用红木、乌木等质地坚硬的木料制作,
- A large drinking bowl or gobletmade of metal or hard wood. 大酒碗用金属或硬木做成的大酒碗或酒杯。
- Mesophase microbeads were prepared from coal tar pitch by thermal condensation in atmospheric pressure. 以煤焦油沥青为原料采用常压热缩聚工艺制备中间相沥青微球。
- The screw-holding of WPC was better and similar to hard wood. 塑木复合材料握钉力较好,与硬质木材比较相似;
- Carbon foams were prepared from coal tar pitch, petroleum mesophase pitch, and AR pitch. 分别以煤沥青、石油中间相沥青和AR沥青为前驱体制备炭泡沫材料。
- Hard wood such as hickory, oak and ash also burn well. 硬质木材,比如山胡桃木,橡木和桉木也不错。
- The structure change of medium coal tar pitch(MCTP) during co-carbonization was investigated by using NMR. 使用一种工业重质油和中温煤焦油沥青进行共炭化反应,改善了煤沥青的炭化性质。
- The results show that coal tar pitch and terephthalic aldehyde can be used to synthesize COPNA resin. 结果表明,煤沥青能够与对苯二甲醛合成COPNA树脂,其反应机理为酸催化下的阳离子型缩聚反应;
- Any of various thick,dark,sticky substances obtained from the distillation residue of coal tar,wood tar,or petroleum and used for waterproofing,roofing,caulking,and paving. 沥青,人造沥青某种厚厚的、黑而粘的物质,由炭焦、木焦或石油的剩余物中提炼出来,用于防水、盖屋顶、填缝和铺路。
- Boron-substituted polyaromatic mesophase was prepared by co-pyrolysis of a coal tar pitch with pyridine-borane complex under autogeneous pressure. 以煤焦油沥青和吡啶硼烷为原料采用加压热缩聚工艺制备硼取代聚芳烃中间相沥青。
- Modification of coal tar pitch(CTP) as carbon materials was studied using 4-methyl benzaldehyde(4-MB) as modifier by an acid catalyst. 以对甲基苯甲醛(4-methyl benzaldehyde,简称4-MB)为改性剂,在对甲苯磺酸(PTS)的作用下对煤沥青进行了改性研究。