他似乎把负号误作正号了.He seems to have mistaken a minus for a plus.出现负号的原因与 33-2 节所讲的相同.The reason for the minus sign is the same as in Section 33 - 2 .这个负号表示这个力总是和速度的方向相反.The negative sign describes the fact that this is always o...
目的比较快薇乔缝线和铬制肠线加丝线在会阴切口缝合后的临床效果.Objective To compare the clinical effect between Vicryl Rapide and catgutCat - gut and thread after episiorrhaphy.生活在繁密的草原的牛能生产更好的天然肠线 么 ?Do cows raised in climates that produce lush pastur...
那家商店还提供窗帘制作和安装服务，而且可以用计算机现场制作报价单和预算书。The shop also offers a curtain-making and fitting service. Quotes and estimates can be prepared by computer on the spot.五拟订工业同业公会年度工作计画及编拟岁入出预算书.E . Draw out annual work plan and annu...