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ENGLISH 波多野结衣琪琪干在线视频Motion or power may be varied to almost any degree by the ratio between the pistons of pumps and the pistons which give off the power, the same general arrangement of machinery answering in all cases; whereas, with gearing the quantity of machinery has to be increased as the motive power and the applied power may vary in time and force. This as said recommends hydraulic apparatus where a great force is required at intervals, and it is in such cases that it was first employed, and is yet for the most part used.An apprentice should never ask questions about simple and obvious matters, or about such things as he can easily learn by his own efforts. The more difficult a question is, the more pleasure a skilled man will take in answering it. In short, a learner should carefully consider questions before asking them. A good plan is to write them down, and when information is wanted about casting, never go to a foundry to interrupt a manager or moulder at melting time, nor in the morning, when no one wants to be annoyed with questions.
But he did not take any notice of all my exhortations and was entirely impervious to them in his grief. So I went to the station side by side with the weeping man, and surrounded by the six soldiers. The crackle of the flames, the sound of collapsing houses seemed more terrifying in the night than in day-time, and now and again I got a shock when suddenly, by the uncertain light of the flames, I saw the corpse of a civilian lying in the dark shade of the tall trees on the Boulevard.The reader may notice how everything pertaining to patterns and moulding resolves itself into a matter of judgment on the part of workmen, and how difficult it would be to apply general rules.
A short distance beyond this little caf lies the large bridge across the Meuse. Before the Germans arrived it was partly destroyed by the Belgians, but so inadequately that obviously the enemy could repair it easily. Bombs were therefore fired regularly from Fort Pontisse at the bridge, and only an hour ago it had been hit, with the result that a big hole was made in the undamaged part. In the road also big holes were made by the exploding projectiles. Having passed underneath the viaduct of the bridge, I found myself opposite Vis on the sloping bank of the Meuse. Two boys had been commanded by the Germans to work the ferry-30boat for them, and after I had shown them my passport, they took me to the other side.Labourers were called up to assist in reinforcing the conquered forts on the left bank of the Meuse, the forts which by and by might be used to shell their fellow-countrymen, in case the Germans should be forced to retire. Nobody will have offered himself for this work voluntarily, the less so as the proclamation wound up as follows:
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On that evening the soldiers, rough fellows from East Prussia, had been revelling in the cafs, shouting filthy ditties in the streets, and most of them in a very advanced state of intoxication. At ten o'clock suddenly a shot was heard. The fellows took their rifles, which they had placed against the walls, or on the tables of the cafs, and ran into the street shouting in a mad rage: "They have been shooting!" The most tipsy began to shoot at doors and windows simultaneously in various parts of the town, which made the people in the houses scream, and this excited the mad drunken soldiers all the more.73 They forced their way into several houses, knocking down the frightened inhabitants when these tried to stop them.Second.The steam establishes the greatest possible elasticity in the connection between a hammer and the driving power, and at the same time serves to cushion the blows at both the top and bottom of the stroke, or on the top only, as occasion may require.
"2. That all who are in possession of any arms, of whatever description, or any munition must at once deliver everything at the town-hall.
(1.) If milling tools operate faster than planing or turning tools, why are they not more employed?(2.) How may the effect produced by cutting tools generally be computed?(3.) To what class of work are milling machines especially suited?(4.) Why do milling processes produce more accurate dimensions than are attainable by turning or planing?(5.) Why can some branches of manufacture be said to depend on milling processes?The first acquaintance whom I met on Netherland territory was a Netherland lady married to a Walloon, who kept a large caf at Vis. Before the destruction she had asked me, full of anxiety, whether the Germans would indeed carry out their86 threat and wreck everything. I had comforted her, and answered that I did not think them capable of doing such a thing. Weeping, she came to me, and reminded me of my words. The whole business, in which these young people had invested their slender capital, had been wrecked.There is but little object in preparing designs, when their counterparts may already exist, so that in making original plans, there should be a careful research as to what has been already done in the same line. It is not only discouraging, but annoying, after studying a design with great care, to find that it has been anticipated, and that the scheme studied out has been one of reproduction only. For this reason, attempts to design should at first be confined to familiar subjects, instead of venturing upon unexplored ground.
To direct the attention of learners to certain rules that will guide them in forming opinions in this matter of machine combination, I will present the following propositions, and afterwards consider them more in detail:(1.) Why has the lifting of weights been made a standard for the measure of power?(2.) Name some of the difficulties to contend with in the operation of machinery for lifting or handling material.(3.) What analogy exists between manual handling and the operation of hydraulic cranes?(4.) Explain how the employment of overhead cranes saves room in a fitting shop.(5.) Under what circumstances is it expedient to move material vertically?(6.) To what circumstances is the danger of handling mainly attributable?A carriage moving on angular ways always moves steadily and easily, without play in any direction until lifted from its bearing, which rarely happens, and its lifting is easily opposed by adjustable gibs. A carriage on a flat shear is apt to have play in a horizontal direction because of the freedom which must exist to secure easy movement. In the case of tracks, it may also be mentioned that the weight of a carriage acts as a constant force to hold it steady, while with a flat shear the weight of a carriage is in a sense opposed to the ways, and has no useful effect in steadying or guiding. The rigidity and steadiness of tool movement is notoriously in favour of triangular tracks, so much so that nearly all American machine tool-makers construct lathes in this manner, although it adds no inconsiderable cost in fitting.
He explained to me that one of those soldiers accused me of ... spying and arson. He had thought to recognise in me a person who had asked him that afternoon whether he was ... a Belgian or a German soldier, and whom he had also seen escaping from a factory which was in full blaze a moment later.
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