Objective : To investigate the use of sedatives and hypnotics in Beijing.目的: 调查城市居民使用镇静催眠药的情况.Results: The drug cost was increasing year by year, while the percentage of benzodiazepine ( BZ ) hypnotics DDDs was decreasin...
CONCLUSION : CPP is a new safe medical material with good compatibility.结论CPP材料是一种安全而理想的可吸收性生物医用材料.This machine is used for BOPP 、 PET 、 CPP 、 Al - foil, paper rolling material for composition.本机适用于BOPP、PET、CPP、铝箔 、 纸张卷筒...
目前16S251是成为当今世界最强有力同步啮合的变速器.The 16 S 251 is now the most powerful synchromesh transmission in the world.齿合系数 --- 啮合的平均齿数.Contact ratio: the average number of teeth in contact.互相啮合的直齿圆柱齿轮,必须具有相同的径节.Meshing spur gears must...