珀西对兰花的痴迷可以回溯到1951年。Percy's enchant-ment with orchids dates back to 1951.这个城镇的历史可回溯到中世纪.The history of the town dates back to the Middle Ages.注意:我们还要回溯所忽略的字符.Note that we back up over ignored characters too....
Conclusion Calcitriol ointment topical is effective and safe in the treatment of plaque psoriasis vulgaris.结论骨化三醇软膏治疗寻常型斑块银屑病安全、效.Objective To evaluate the efficacy and safety of calcitriol in the treatment of psoriasis ...
Casting for auto parts ( calliper, bracket, disc, pressure plate etc ), reerigerator and air conditioner compressor parts ( cylinders, crankshaft etc ), machinicalparts, construction parts , motorparts, pump parts etc.汽车...