Boron - substituted polyaromatic mesophase prepared by co - pyrolysis of a 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.A new syntan product prepared with tar p...
I feel honor bound to repay the money I borrowed.我觉得有责任归还我借的钱.They agreed to repay their creditors over a period of three years.他们同意3年内向债主还清欠款.The proceeds from the sale will be used to repay the loan.销售所得将用来偿还贷款....
The classification should neither be too corse, nor too fine.同时提出,全国性藏品分类法的线条不宜太粗, 也不宜过细,而主要是在大的体系和类目上力求统一.It makes melt , plasticating, injection and pressure corse go on in the state of vibrating periodically.分析了此种振动装置...
水平和垂直线所标记 ( 3 ) 是以二进位制表示的数目8.The horizontal and vertical ticks ( 3 ) are a representation of the number 8 in binary form.我们也可以将矩阵分块,即在行以及列之间画一些水平线和垂直线.We may partition matrices by drawing horizontal and vertical lines be...
Two unusual lymphomas . Case 2 : pulmonary intravascular lymphomatosis.两个不寻常的淋巴瘤.We describe the clinical, radiologic, and postmortem findings in a 49 - year - old woman with intravascular lymphomatosis.我们报告一例49 岁 女性诊断为血...
some of the rare species that inhabit the area生活在这个地区的一些罕见物种Wild tribes still inhabit part of the Philippines.菲律宾部分地区仍然居住着一些原始部落.Woodpeckers inhabit hollow trees.啄木鸟栖息在中空的树中....