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    Software name: Appdown
    Software type: Microsoft Framwork

    Software size : 439 MB

    soft time:2021-01-24 19:49:04

    software uesing

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      In mounting sheets that are likely to be removed and replaced, for the purpose of modification, as working drawings generally are, they can be fastened very well by small copper tacks driven along the edges at intervals of two inches or less. The paper can be very slightly dampened before fastening in this manner, and if the operation is carefully performed the paper will be quite as smooth and convenient to work upon as though it were pasted down; the tacks can be driven down so as to be flush with, or below the surface of, the paper, and will offer no obstruction [81] to squares.碇阢�砀ネ队撺いケPatterns and castings are so intimately connected that it would be difficult to treat of them separately without continually confounding them together; it is therefore proposed to speak of pattern-making and moulding under one head.挞イ°ぅ

      �とイ去ēぺThe road along which I walked, the main road between Visé and Liège, was laid under fire from various forts, and every moment I saw on my left clouds rise up from the rocky heights that run along the whole of the Meuse. These clouds were partly formed by smoke from the guns mounted by the Germans against the forts, partly by volumes of earth thrown up by the projectiles from the broken-up soil.楗イThe advantages gained by milling, as stated, are speed, duplication, and accuracy; the disadvantages are the expense of preparing tools and their perishability.蓼ヰぜス


      "Stand still!" the officer thundered.菠イ�イ徉イThese are, however, not the only reasons which have led to a running platen for planing machines, although they are the most important.づしォン

      �イIn regard to the use of the T square and set squares, no useful rules can be given except to observe others, and experiment until convenient customs are attained. A beginner should be careful of adopting unusual plans, and above all things, of making important discoveries as to new plans of using instruments, assuming that common practice is all wrong, and that it is left for him to develop the true and proper way of drawing. This is a kind of discovery which is very apt to intrude itself at the beginning of an apprentice's course in many matters besides drawing, and often leads him to do and say many things which he will afterwards wish to recall.イ殖い雳らPatterns and castings are so intimately connected that it would be difficult to treat of them separately without continually confounding them together; it is therefore proposed to speak of pattern-making and moulding under one head.诊イぅゥ



      A difficulty which arises in hardening tools is because of the contraction of the steel which takes place in proportion to the change of temperature; and as the time of cooling is in proportion to the thickness or size of a piece, it follows, of course, that there is a great strain and a tendency to break the thinner parts before the thicker parts have time to cool; this strain may take place either from cooling one side first, or more rapidly than another.颔眩ゥ�佶ヱく楔"Is this then the road to Visé?"まイ

      �丨The expense of patterns should be divided among and charged to the machines for which the patterns are employed, but there can be no constant rules for assessing or dividing this cost. A pattern may be employed but once, or it may be used for years; it is continually liable to be superseded by changes and improvements that cannot be predicted beforehand; and in preparing patterns, the question continually arises of how much ought to be expended on them—a matter that should be determined between the engineer and the pattern-maker, but is generally left to the pattern-maker alone, for the reason that but few mechanical engineers understand pattern-making so well as to dictate plans of construction.ソ"Nothing! But, madame, I want to pay for what I drink!"ラ抓


      When De Tijd sent me to Belgium as its correspondent, I had not the faintest notion practically how to perform my duties, for the simple reason that I could not apprehend at all how a modern war might be conducted. But I was destined to receive my first impressions when still on Netherland[1] territory and after my arrival at Maastricht.郡ぅ廿INTRODUCTION┳さ�せい

      �欷ぅ攻钰墉"No, no, sir," the lady said. "Oh, oh, it is so terrible! By and by the Germans will burn Liège and kill us all. She is the little daughter of my brother at Maastricht, and came to visit us a few days before war broke out, but now she will be killed too, for she refuses to go away."ザざぅBetween a running motion of the dies, or a running motion of the blanks, there are the following points which may be noticed.饯挫イ