downcut是什么意思

网络释义

用法例句

sublevel undercut caving method

分段下部掏槽崩落开采

Application of cut blasting in trench digging technique in the middle of the stope

掏槽爆破在采场中部掘沟工艺中的应用

Popularization and Application of Deep-hole Blasting Technique in Bottom Compound-term Wedge Cutting

底部复式楔形掏槽中深孔爆破技术的推广应用

Study on Effect of Symmetry of Wedge-shaped Cutting Hole Angle on Cut Blasting

楔形掏槽炮孔角度对称性对掏槽效果影响研究

The Norwegian cut can provide more dependable advance per round than the plough cut.

挪威掏槽与楔形掏槽相比，可以提供更可靠的每次爆破的进度。

During recent years the seam cut has once again come into use.

近几年来，又再度使用了裂缝掏槽。

Study of Method of Conducting Smooth Blasting in Weak and Soft Surrounding Rocks

软弱围岩中光面爆破掏槽孔方案研究

A lengthwise groove on a molding between the convex upper part and the soffit.

深槽在装饰线条的上部凸起部分与下部之间的一条纵向槽

Finally, she stopped on the landing, and took the key out of her purse.

最后，她在楼梯顶部过道上停下，从小钱袋里掏出钥匙。

If the charge used is too large, the rock can become sintered so that the cut used is a failure.

如装药量太大，岩石就会挤死，使掏槽失败。

Numerical Simulation Research of Charging Optimization in Spiral Cutting Blasting in Medium Deep Bore

中深孔掏槽爆破装药优化的数值模拟研究

A Study and Application of Methods of Longhole Cutting and Joint-cutting Cartridge in Shaft Excavation Blasting;

竖井中深孔掏槽和切缝药包法的研究与应用

The kibble hole arrangement optimization of tunnel digging blasting of Daanshan mine

大安山矿巷道掘进爆破掏槽孔布孔优化

Discussion About Blasting Footage and Cutting Patterns of Circular Tunnel in Supper Hard Rock

圆型隧洞超硬岩爆破进尺与掏槽方式探讨

Design of Combination of Smooth Blasting and Double-wedge Cut for Roadway Excavation

双楔形掏槽方法和光面爆破技术的综合设计

Application of Combined Slotting in Driving Hard Rock Roadway

混合掏槽技术在坚硬岩石巷道掘进中的应用

The loosening holes outside the plough cut are also drilled at an angle which improves the breakage possibility.

在楔形掏槽眼外侧的扩槽眼也要有角度以改善爆破效果。

A gutter under the eaves of a roof.

水槽屋檐下的凹槽：