20mm

Production practice of Φ 20mm right screw high strength reinforced bar

热轧Φ20mm右旋等强锚杆带肋钢筋生产实践

Design Development of Double-strand Splitting Process for Ф 20mm Ribbed Steel Bar

Ф20mm带肋钢筋双线切分工艺的设计开发

Type B separator reached to 92.2 % at 10 ~ 20mm .

B型分离器回流缝在10～20mm时分离效率在92.2%以上。

" Series of basic dimensions of panels , rack and cabinets for vertical increment of 20mm "

GB/T3047.1-1995高度进制为20mm的面板、架和柜的基本尺寸系列

In the third group pelvic diameter ≥ 20mm , 5 kidneys were operated in all 6 kidneys .

肾盂积水程度≥20mm的6只肾中，5只经手术解除梗阻。

The tumor had a diameter of 8 ~ 20mm , located at the tip of appendix in 5 cases .

肿瘤直径8～20mm，5例位于头部。

The anisotropy of efficiency of stilbene crystal of φ 18mm × 20mm was presented in the paper . The anisotropy of efficiency was tested in experiments .

本文介绍了φ18mm×20mm芪晶体探测器探测效率存在的各向异性，对探测效率的各向异性从实验上进行了检验。

The inside surfaces of some workpieces with holes about 5 ~ 20mm in width are inspected practically using this system , and the 3D shapes of these surfaces are reconstructed .

用该检测系统对内部宽度为5~20mm的加工件的内表面进行实际检测，得到并恢复了被测内表面的三维形貌。

In this paper , experimental research was conducted on the magnetic abrasive machining of inner surface of general and small diameter hole ( < 20mm ) of the ring , a kind of textile workpiece .

本文以纺织配件钢领为例，对普通内圆表面和小孔径（<20mm）内圆表面磁性研磨加工进行了试验研究。

The total uncertainty of the system is less than 2 μ m , and the measuring speed is not faster than 20mm / s. Except fixing the sensor , all measuring process are controlled by computer .

系统总不确定度不大于2μm，测量速度不大于20mm/s，除被测传感器安装外，全部检测工作完全由微机控制自动完成。

Volatility and growth temperature were decreased obviously through change of the ratio of solute and fluxs and a crystal with dimensions of 24mm × 20mm × 6mm was obtained .

通过改变助熔剂与熔质的配比，明显降低了晶体的生长温度，减少了组分挥发，优化了晶体生长条件，得到24mm×20mm×6mm尺寸的晶体。

The double wheels of train to proceed step face rotate repair , often make wheel path decrease 10mm ~ 20mm . After 3 ~ 4 times repairing , wheels were declared worthless .

火车轮对进行踏面旋修，往往使轮径减少10mm～20mm，经过3～4次踏面加工就报废。

All title compounds have the effect of self-extinguish with 10 % addition in epoxy resin ( E-44 ), and the combustion length is about 10 ~ 20mm in the level combustion test .

当添加量为10%时，环氧树脂样条燃烧长度在10～20mm左右，均能达到自熄效果。

By laser engineering net shaping ( LENS ) Co - based alloy powder for multi-layer test was melted on a steel substrate , and the thin wall parts 2 ~ 20mm with smooth surface and accurate size was obtained .

利用激光近成形技术，采用钴基合金粉末在金属零件表面进行单道多层熔覆成形试验，获得具有良好外形和尺寸精度2～20mm的薄壁零件。

The trial found that people given medication to lower their blood pressure to 120mm Hg , or 20mm Hg below the previous target , suffered a third fewer heart attacks , heart failure and strokes than control groups .

试验发现，通过服药把血压降到120mmHg、或者比之前目标低20mmHg的人，心脏病发作、心力衰竭和中风的概率比对照组少三分之一。

In order to improve the grade of feed ores , commercial tests on the technology and equipment for pre-concentration of tin-lean coarse-size ores ( + 3 ~ - 20mm ) were carried out .

为提高选厂的入选品位，需要对92号矿体粗颗粒（+3～-20mm）贫锡矿石进行预选抛废工艺、设备和工业试验研究。

With processes of arc melting alloy ingots and conventional copper mold suction casting , a plate Fe-based bulk amorphous alloy in Fe-Co-Zr-Mo-W-B system of the size of 20mm × 10mm × 1mm was prepared successfully .

采用电弧熔炼母合金、普通铜模吸铸工艺，制备出尺寸规格为20mm×10mm×1mm的板状Fe-Co-Zr-Mo-W-B系Fe-基大块非晶合金。

According to the finishing requirement of length-diameter ratio greater than5and4 ~ 20mm in diameter cylindrical hole parts with the mass production of the type , compared with fine boring , lapping , honing , electroplating CBN honing tools was overriding .

针对长径比大于5，直径4-20mm圆柱孔零件大批量生产的精加工要求，电镀CBN珩具相比精密镗孔、研磨和珩磨具有优势。

The incidence of the length of stent > 20mm , diameter of stent < 3mm , ACC / AHA type C lesion , diffuse lesion and ostial lesion tended to be higher in group B and C than in group A ( P < 0 . 001 ) .

B组和C组中支架长度大于20mm、支架直径小于3mm、C型病变、弥漫病变和开口部病变的统计结果都显著高于A组（P<0.001）。