Òƶ¯¶¯»­¿¨×¡ÁË °æflixel 91app ¿¨Î÷Å·tr600¿ÉÒÔÓà »ªÎª×ÀÃæÀï°æ±¾1.3.1

±±¾©Ê±²ÊpkÊ°¼¼ÇÉ ×îÐÂÏà¹Ø½éÉÜ

�ì¤¥í´¥¡Ð¥Ð

(1.) Why are shaping machines better adapted than planing machines for planing slots, key-ways, and so on?—(2.) What objects are gained by a quick return motion of the cutter bar of shaping machines?拉

�Ö¤ å¥î¥

The fitting or finishing department of engineering establishments is generally regarded as the main one.¥¥¥ò¤¥¥¤â¥¤ð

�ۤ岾¥¤

�ñò¥¤¥

�³§ð

"I suppose, madame, that you have an old 'bike' to sell?"¤¤¬¨´

�±¢ºÍ¤«¥ç¦

�ͤ¯×ªæÝ¥¤µ¤Ö¤

�¥¥¤¤¤¤ñ¤¬¤¥¤¦

These remarks upon hammers are not introduced here as a matter of curiosity, nor with any intention of following mechanical principles beyond where they will explain actual manipulation, but as a means of directing attention to percussive acting machines generally, with which forging processes, as before explained, have an intimate connection.¤¤»¥¥Ô¤ÐìõÍ¥Ö

�¿¥Û¥Ï

�¹¥¥¥¾­¥¥ª¥¥¯¤

"Leave everything to me; I'll invite them to have a glass of wine with me, and you will see then that they are kind people."¤ãå롤¥¤

The lifting strain at the front end of a platen is of course increased as the height at which the cutting is done above its top, but this has not in practice been found a difficulty of any importance, and has not even required extra length or weight of platens beyond what is demanded to receive pieces to be planed and to resist flexion in fastening heavy work. The reversing movement of planing machine platens already alluded to is one of the most complex problems in machine tool movement.ʧ¾¡¤

When I drove into Namur, I found the town comparatively quiet; there was some traffic in the streets, and Belgian army surgeons and British nurses in their uniforms walked about freely.154 There were many wounded: the German wounded were all placed in the military hospital; the Belgians and the French had been taken to the Sisters of Mercy, the Institution Saint Louis, the High School for Girls, and the Sisters of Our Lady.¤å¥