impact drilling 中文意思是什麼
impact drilling
解釋
沖擊鉆進-
This drilling adopts crank connecting link and walking beam percussion mechanism, which make the drilling possess two percussive functions, normal drilling takes connecting link impact as main mode, when encountering special situation and the connecting link impact can not drill, it can transform into hoisting impact, the stroke length can be modulated, it realizes automatic percussive drilling due to continuous operating of connecting link percussive mechanism, these can enhance drilling efficiency and relieve labor intensity ; it adopts pumping reverse circulation to drain slag, which not only resolves the drilling difficulty in special stratum such as pebble and gravel stratum and hard stratum, but also resolves the problem that the percussive drill ' s efficiency is low ; it adopts spur gear differential mechanism as double cylinders lazy tongs of main hoist, which not only ensures the balance state of drilling tool, but also reduces the mechanical design, and reduces the cost ; the bottom plate traveling motion of this drilling machine adopts walking type ; the drilling tower adopts hydraulic pressure uprising, and reduces the assistant operating time
該鉆機採用曲柄連桿、游梁式沖擊機構，使鉆機具有兩種沖擊功能;正常鉆進以連桿沖擊為主，遇到特殊情況，用連桿沖擊不能鉆進時，可轉為卷揚沖擊，沖程可調，因連桿沖擊機構連續工作，所以實現了自動沖擊鉆進，可提高鉆進效率，減輕勞動強度;採用泵吸反循環的方式排渣，既能有效解決卵礫石地層、堅硬地層等特殊地層鉆進的困難，又很好地解決了沖擊鉆機效率低下的問題;採用直齒圓柱齒輪差速機構作為主卷揚的雙筒同步機構，既保證了鉆具處于平衡狀態，又大大簡化了該機構設計，降低了成本;該鉆機底盤行走移位採用步履式;鉆塔採用液壓起立，減少了輔助作業時間。 -
Znd2180 complete crystal shape, perfect cubic octahedron, good diaphaneity, high impact strength and thermal stability, suitable for high grade cutting, drilling, and grinding tools
Znd2180晶體完整，具有完整的立方八面體，透明度好，高的抗沖擊強度和熱穩定性。適用於高檔次切割工具、鉆頭、碾磨工具。 -
Construction technology of rotary drilling machines and impact hammer working together in mollisol area
軟土地區旋挖鉆機與振動錘聯合施工鉆孔灌注樁施工工藝 -
That same year, a major oil spill off the coast of santa barbara, california, raised concerns about the danger of offshore oil drilling, and similar fears were raised about the impact of the proposed alaska pipeline
同一年，加利福尼亞州聖?芭芭拉發生的重大海上石油泄漏引起人們對海洋石油開采隱患的關注，而計劃中的阿拉斯加石油管道的影響也引起類似的反響。 -
Supporting the use of impact drilling electric drill. drilling, hole spacing with hole depth should meet the design requirements
鉆孔使用配套沖擊電鉆.鉆孔時，孔洞間距與孔洞深度應滿足設計要求 -
Hours spent drilling pupils increases " anxiety and stress ", narrows the curriculum and has limited impact on standards, it is claimed
該研究稱，連續幾小時集中精力會增加小學生們的「焦慮和壓力」 ，使所學課程變的狹隘，並限制標準產生的影響。
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