On the basis of studying the mechanism of the self-excitation vibration and the helix lobes of the cylinder in the well logging tool during deep-hole boring, th e influence of the length of the guide pads on the torsion deformation and stabi lity of the boring cutter is analyzed.

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The preproduction situation of commercial pure titanium (Gr.2) cross-rolled boring seamless tube was introduced, and the problems in it were analyzed. The effect of Q value on tube inner surface quality and boring problems were discussed.

中文摘要：介紹了工業(yè)純鈦（Gr.2）斜軋穿孔無縫管的生產(chǎn)試制情況，并對生產(chǎn)中遇到的問題進(jìn)行分析观看黄色网站啊啊，重點(diǎn)討論斜軋管冷加工過程中Q值對管材內(nèi)表面質(zhì)量的影響及管材鏜孔問題思思久久成年人免费视频。

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Major equipment has: 2M X 10M ordinary lathe, 250 and below, various types of boring machine specifications, 5M roll 7M double column vertical lathe comb, 100X6M deep-hole drilling, 3M X12M gantry milling bed, HR Two-table machining centers, CNC boring 130 milling machine, frequency, medium frequency quenching machine, 15T electric furnace, etc..

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The reliability of ages from optically stimulated luminescence dating of boring core has a stringent dependence on characteristic of samples, and on motheds of boring and sampling.

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The results show that the study on transimittivity can be done using the points along the circle arc centered at the roadway or the boring core, the transimittivity at the joints along the right angle ray can be studied using one single point behind the joint, and the studies on transimittivity can be done on any reasonable radius value of the roadway or boring core in a typical rock.

分析結(jié)果表明：單節(jié)理后各節(jié)點(diǎn)透射率的研究人人揉人人操人人草，可以通過單節(jié)理后某一以巷道或鉆孔中心為中心的圓弧上各節(jié)點(diǎn)的透射率來展開；射線角為90°的射線上節(jié)理后各節(jié)點(diǎn)透射率的研究黄色视频在线观看wwww，可以通過節(jié)理后某一節(jié)點(diǎn)的透射率來展開国产主播在线小蝌蚪；單節(jié)理的透射率的研究可以在一個(gè)固定半徑值的巷道或鉆孔的模型上用一種典型的巖石進(jìn)行。

Company's existing engineering and technical personnel more than 20 people, product design and development of strength under the welding, processing, assembling workshop, with a variety of devices many Units,(floor-type boring and milling machine 160, Skoda boring and milling machine, 5-meter vertical lathe , 3.5m vertical lathe, radial drilling machine, 1.6 * 10m, 1.2 * 8m horizontal lathe, milling machine, grinder and other equipment more than 20 Units) Units 3 and another heat treatment furnace, high-frequency hardening machine and other equipment.

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In regard of the problems of large holes to be bored, deep boring into rock and complicated rock layers in construction of bored pile foundations of in\|water piers of main spans of Wuhu Changjiang River Bridge, selection and structural features of cutter heads and hobs of the boring equipment used are described.

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To do it as a task - having some bozo who once wrote a really boring book about web design (and thereby imbued with writerly superiority) dismantle everything I produced and turn it into uber-boring robot speak - well, that just all but killed my enthusiasm for it.

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