在每次约化后, 余下的方程是保持对称和带状的.After each reduction, the remaining equations remain symmetric and banded.这个矩阵是对称的且是带状的, 带宽等于四.This matrix is symmetric and banded , the band being equal to four.我们在大部分实际问题中得到的方程组不仅是对称的而且还是带状的.The ...
常常是用离心法分段收集沉淀的.Precipitates are usually collected by centrifugation at intervals.它可以用离心法分离.This can be separated by centrifugation.结论: 密度梯度离心法分离获得的人胚胎骨髓间充质干细胞纯度高.Conclusion: High purity of MSC can be obtained by density ...
Igloos are usually dome - shapedand are made of large slabs cut from compacted snow.雪屋通常都是圆顶结构,由坚实的冰雪割成大块的冰砖搭建而成.corpses laid out on cold mortuary slabs放在冰冷的停尸桌上的尸体Slabs of rock had slipped sideways in the remote past, a...
沙砾覆于铁质土层与砂砾层之上.Gravelly - sand over an iron - pan and gravel layer.小石头、砂砾层也可用来做隔绝层,以保持水分,降低土壤的温度.Pebbles and gravel also insulate the soil to keep surface temperatures low and preserve water.古河谷的边缘地带,往往缺失底部的河床相砂砾层.The ed...
a child with an enquiring mind有好奇心的孩子I was enquiring in Lost Property at Derby.我当时正在德比的失物招领处打听。I have always had an enquiring mind where food is concerned.我在吃的方面一向很爱探究求索。...an enquiring glance.探询的一瞥I have always had an e...
个人会员费13英镑（无工作者7英镑）。Individual membership costs £13 (£7 unwaged).支付一年的会员费就可以成为会员。You can become a member by paying the yearly subscription.我已经交了我的会员费.I've already paid my membership dues....