reducing bore,reduced port,venturi port是什么意思

网络释义

用法例句

In the paper,the construction technology for the large cross-section connection tunnel of Shiqiaozhanbei Panyuguangchangzhan shield-driven running tunnel on line 3 of Guangzhou Mass Rapid Transit System is presented and analysis is made on the construction methods for the excavation of the connection tunnel in unstable ground and for the cutting of the large-area segment lining.

介绍广州市轨道交通三号线【市桥站北～番禺广场站】盾构区间大孔径横通道施工技术,分析了在不稳定地层中进行横通道开挖和大面积盾构管片切除的施工方法。

Test method for pore diameter of porous ceramic

GB/T1967-1996多孔陶瓷孔道直径试验方法

The diameter of the objective of a telescope.

孔径望远镜物镜的直径

The stem has a slightly smaller diameter than the valve bore.

阀杆的直径略小于阀体孔的直径。

Discussion on Revamping of The Large Diameter Piercing Head of 10MN Vertical Piercing Mill

10MN立式穿(扩)孔机大直径扩孔头的改造

The diameter of such an opening, often expressed as an f - number.

孔径这种开口的直径，常以f数表示

The shaft leads directly to the reactor system.

孔道直通反应炉系统

Probe into Large Diameter Direct Drainage Borehole Construction Technology in North China Type Coalmines

华北型煤矿施工大孔径直排孔的工艺探讨

The cylinder diameter of raceway center(mm)

－滚道中心圆直径(mm)

high efficiency drilling system for small and deep hole

高效小直径深孔钻削系统

The human eye has a pupil diameter which, of course, varies.

人眼瞳孔直径当然是可变的。

LARGE-DIAMETER LONGHOLE STOPING METHOD IN SPAIN

西班牙大直径深孔采矿方法考察概况

Stage 3: >=400 microns in diameter, pseudooperculum.

直径大于400微米（裂孔），假性包盖。

Research on the Bearing Performance of the Super-Long and Large-Diameter Bored Pile;

超长大直径钻孔灌注桩承载性能研究

The Academic Optimization of Cutting Parameter of Machining Small-deep Hole

小直径深孔加工切削用量的实验优选

The measurement of scotopic pupil diameter with noncontact tonometer

非接触眼压计测量暗适应下瞳孔直径

EXPERIMENTAL RESEARCH ON NEGATIVE SKIN FRICTION OF LARGE-DIAMETER BORED PILES

大直径钻孔灌注桩负摩阻力试验研究

Technology of 1000 meter directional borehole at large diameter for mine gas extraction

顶板大直径千米长钻孔抽采瓦斯技术

Gas drainage in seam with large auto variable diameter bore holes

自动变径大直径钻孔抽放煤层瓦斯试验