查询词典 P.270

Sb can combine with Cu and P to form a low melting point compound which lowers the melting point of binary Cu-8P eutectic alloy by nearly 200℃. Bi and Cu can create compounds with low melting point(270℃) distributing at the boundaries and that is the reason why the melting point of (Cu-8P)-Bi is lower than that of binary Cu-8P eutectic alloy. The eutectic cluster can be refined with the addition of Fe, and that is the reason why the addition of Fe can decrease the melting point of Cu-8P alloy. Two means of decreasing the melting point of Cu-8P are found.

一定量的Sb与Cu， P形成低熔点相，从而大幅降低了Cu-8P合金的熔点，使其熔点降低近200℃；加入少量Bi后， Bi与Cu在共晶团晶界上形成熔点为270℃左右的低熔点化合物，且Bi的加入明显细化Cu-8P合金共晶团，从而使Cu-8P合金的熔点降低；加入Fe能明显细化Cu-8P合金的共晶团，使层片间距由8μm减为2μm以下，并使共晶团由层片状向短棒状转变，虽然Fe与Cu形成熔点为806℃的高温相，但Fe的细化作用使得Cu-8P合金的熔点降低，但降低幅度不大。

Inverted surcharge of "temporarily used for" 2c on 3c junk 1st peking print, used on piece, tied by shanghai dater on sep 24, 1924, this stamp has the same position from the setting as that listed on p.270 of "prize selections爁rom the rocpex taipei'81", only about 20 pieces believed to exist, well-known as one of the "four rarities of republic of china", from overseas collector, extremely precious, vf rmb:

贴北京一版帆船加盖"暂作"改值邮票2分/3分倒盖变体剪片，销上海1924年9月24日戳，颜色鲜艳，齿孔完整，此票与台湾《邮展选萃》270页图为同一位置版式，存世仅二十枚左右，为"民国四珍"之一，此票源自海外藏家，首次在中国大陆拍卖会上出现，极少见，上品

At the same time, this model was used to explain the reason for error of phase shift.

通过优化设计，入射角为54°，在1285～1345nm之间p，s波获得了270±1°的相移，同时也使反射率在99.5%以上。

Total of 240 choosable cases including 120 males and 120 females with HCT parameters 0.42L/L and 270 choosable cases including 150 males and 120 females with HCT parameter 0.45L/L,examined by pressure transfer type viscometer from healthy testers.

结果不论是锥板式还是压力传感式血流变仪的测定结果，各相同HCT组的高、中、低切全血粘度值按不同性别比较均无显著性差异（P＞0.05）。

The 270 Gushi white geese during growth period were divided into 9 groups, and each had 10 pullets with 3 replicates. 3×3 factorial arrangement was designed, consisting of 3 protein levels (12.4%-14.5%, 14.5%-15.5%, 15.5%-17.4%), 3 Ca levels (0.7%, 0.8%, 0.9%) and 3 P levels (0.30%-0.39%, 0.40%-0.41%, 0.50%-0.52%).

方法］将270只生长期固始白鹅随机分成9组，每组10只，各设3个重复，其饲粮采用蛋白水平为12.4%~14.5%、14.5%~15.5%、15.5%~17.4%，钙水平为0.7%、0.8%、0.9%，磷水平为0.30%~0.39%、0.40%~0.41%、0.50%~0.52%采用3因素3水平正交设计，比较每组日增重。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。