It is difficult to drill or can not drill if we use routine methods, using through down-hole hammer air drill method not only raise rate of drilling, but also reduce pollution to the aquifer, promoting exploration and development for the deep underground water.

利用貫通式潛孔錘多工藝空氣鉆進(jìn)方法不僅能提高鉆進(jìn)速度仑乱高清免费视频观看AA片，而且能減少對(duì)含水層的污染高清无码免费在线视频专区，為深層地下水的勘探開(kāi)發(fā)提供了技術(shù)支持。

The study includes the hole color TV imagery system for drill hole, even-pole bore-hole acoustic system and acoustic meter, bore-hole multi-point consolidation apparatus, the quick camera computer-aid image for high rocky slope, image technology for layer analysis, safety monitoring technology for the section close to the dam, software for processing and forecasting the slope monitoring data, high precision geodesy monitoring automation system, etc..

鉆孔彩色電視孔壁成像系統(tǒng)、直接橫波測(cè)井研究偶極子井下聲系和聲波儀欧美一级a大片在线观看、鉆孔多點(diǎn)滲壓儀及壓模系統(tǒng)黄色十八岁网站、巖質(zhì)高邊坡快速攝像微機(jī)地質(zhì)素描成圖、層析成像技術(shù)精品人成视频免费国产、近壩庫(kù)段安全監(jiān)測(cè)技術(shù)欧美性人成三级视频、邊坡監(jiān)測(cè)數(shù)據(jù)處理預(yù)報(bào)軟件研究、高精度大地測(cè)量監(jiān)測(cè)自動(dòng)化系統(tǒng)等項(xiàng)目欧美久草，研究成果內(nèi)容新日韩在线综合自拍视频网站免费、先進(jìn)、實(shí)用别揉我奶头视频一区，已在工程中應(yīng)用亚洲全网黄色网站，效益顯著。

The vibration of drilling string in horizontal well is closely related with the overall length of the drill string and structural shape. In this paper ,a mechanical model of longitudinal vibration of drill strings is established by studying the overall drilling string,seeing a hole as arbitrary bending curve in three-dimensional space.

本文以整體鉆柱為研究對(duì)象黄色网站操一操，將井眼視為一條可以任意彎曲的三維空間曲線理论片235影院，建立了水平井鉆柱縱向振動(dòng)分析的力學(xué)模型。

Drill If you want to drill a hole in a piece of wood, you will need a drill.

如果你想在一塊木頭上鉆孔亚洲欧美一级AA片，就需要一個(gè)鉆機(jī)91自拍视频在线观看。

In the commonly used positive cycle of drilling, the mud pump is to rinse the surface with water medium ─﹑ mud or polymer washing fluid at a certain pressure, through the high-pressure hose taps and drill column ﹑ center hole in the bottom of the direct-drill in order to achieve Cooling ﹑ be cutting down the drill cuttings removal and transport to the surface purpose.

在常用的正循環(huán)鉆探中﹐泥漿泵是將地表沖洗介質(zhì)─清水﹑泥漿或聚合物沖洗液在一定的壓力下﹐經(jīng)過(guò)高壓軟管﹑水龍頭及鉆桿柱中心孔直送鉆頭的底端﹐以達(dá)到冷卻鉆頭﹑將切削下來(lái)的巖屑清除并輸送到地表的目的。

It will promote the progress of hole making thechique and accelerate the automatization course of the tool production in our country. In addition, the author analyzes a drill grinding unit on a machining center and present a new grinding model for grinding four-plane facet drill points, which will be a new way of drill grinder design.

此外黄频美女裸体，作者還分析了一臺(tái)加工中心上的鉆頭刃磨裝置怡红院视，提出了一種兩軸合成四平面鉆尖的刃磨理論，并對(duì)其應(yīng)用前景進(jìn)行了初步探討黄网站入口在线看，為鉆頭刃磨方法和刃磨機(jī)的研制開(kāi)辟了一條新的途徑动漫3D黄片。

Comparing the quality of the three methods of making hollow drill steel,"drill-hole and hot-rolled with core"method is best. The present paper indicates that the prolonging life mechanisms of the new drill rod include four aspects.

本文給出H22-40SiMnCrNiMoA錐體連接釬桿制造工藝，運(yùn)用&鉆孔-帶芯熱軋法&欧美一级爱爱视频一区二区、&熱穿-熱拔法&乱人伦中文视频在线一区二区三区、&熱穿-熱軋法&三種工藝加工的H22-40SiMnCrNiMoA試驗(yàn)釬桿中，&鉆孔-帶芯熱軋法&各方面的質(zhì)量都是最好亚洲最大黄网欧美在线。

Mechanical drill hole System regulation explanation Produces the level using the mechanical drill hole to connectthe pipeline.

哪位大哥，大姐幫忙快點(diǎn)幫我翻譯一段文字機(jī)械鉆孔制程說(shuō)明利用機(jī)械鉆孔產(chǎn)生層間的連通管道最黄视频一区二区三区免费观看。

When it is to drill a deep hole, the drill may be fixed on a ground wood beam, and then put up the drill tower.

平整場(chǎng)地使鉆機(jī)安放平穩(wěn)牢固黄色网站日韩，當(dāng)深孔鉆進(jìn)時(shí)，可將鉆機(jī)固定在自備的地木梁上欧美粗硬大，豎好鉆塔50,60,70老熟妇视频。

HSS twist drill, woodworking drill, masonry drill, tap, diamond disc, power tools and BI-metal hole saw.

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