区

It was evidenced that the rolling-pass of the Mannesmann rolls is non-linear and the non-linear barrel-shaped rolls are unfavourable for further increasing the production capacity with high effeciency and improving the tube quality.

为了发展我国钢管制造技术，我们从1975年起研究折线轧辊下的变形区，给出它的曲面方程式和子午线方程式，证明了变形区是非线性的。

After ten years of unremitting efforts, to a "customer first, integrity management, continuous improvement" business philosophy has been well-known domestic and foreign manufacturers and the vast majority of customers the trust and recognition, ten in Baoan District manhole Venture Road and opened two stores operating in 25 Baoan District 22 Products opened a distribution center (covering an area of 1800 square meters) and a production base, the register " East of the good "brand, the" East-kai "has become the most professionalProduct manufacturers, wholesalers, the most professional electronic instrument, Static distributors, retailers.

经过十几年的不懈努力，以"客户至上、诚信经营、不断进取"的经营理念，得到了国内外知名厂商和广大客户的信赖和认可，先后在宝安十区创业路和沙井开设了两家经营门店，在宝安25区22栋开设了一家产品配送中心(占地面积1800平方米)和一家生产基地，注册了"东之佳"品牌，使"东之佳"成为了最具专业的五金交电产品生产商、批发商，最具专业的电子工具、防静电产品经销商、零售商。

At least one additional transverse thread (50, 51) is interwoven in at least one seam zone with the longitudinal thread system to provide increased surface contact for better batt adhesion in the seam zone.

至少一根辅助横向线(50，51)在至少一个接缝区(40)中与纵向线系交织，以在接缝区中得到更好毛层粘合所需要的增加的表面接触。

Sitting in the dugout, squatting behind the plate, standing in the batter's box, he thought about his son, the worry squeezing baseball out of his mind, infesting every part of his day.

无论坐在球员休息区、蹲在本垒板后或是站在打击区，这是他心中除了棒球之外另一个甜蜜的负担，而这个负担缠绕著他每一天。

Officially recognized sites as well as locally-known sites could be accompanied by 'rules' for viewing, and details on the species you might see.

不论是正式被认可的观察区，或是地方性的观察区，都必须包含观察'守则'，以及可能看到的物种的细节。

Given that he has travelled many thousands of miles in search of lasting love, the irony has not escaped him that Claire works in Belgravia , just a few miles from Soho.

由于他旅行了数千英里寻找能与他厮守一生的人，他认识到此事的反讽意味：克莱尔在伦敦贝尔格拉维亚区的写字楼工作，与苏活区只相隔几英里。

Boisdale of Belgravia boasts not just a smoking area, but a cigar terrace.

伦敦上流街区贝尔格莱维亚区的Boisdale餐厅不止有吸烟区，还设置了一个雪茄露台。

Benzene hexachloride, dichlorodiphenyltrichoroethane and organophosphorus pesticides in 103 soil samples collected from Wutongqiao district of Sichuan were detected by gas chromatography. Spatial distribution characteristics of residual pesticide in soils of transitional zone from mountain to plain was evaluated by employing the methods of GIS and geostatistical techniques.

以四川省五通桥区为例，利用气相色谱法检测丘陵平原过渡区103个样点的土壤样品中六六六、滴滴涕和10种有机磷农药残留量，利用地统计方法和GIS技术，评价研究区域内的土壤农药残留空间分布特征。

Moreover, the quasi-analytical expressions of the relative concentrations at the mobile region and the immobile region are deduced respectively by using Bessel equation, Bessel function and the method of Laplace transform under the initial concentration zero and the first or second boundary condition of a semi-infinite one-dimensional space.

并分别在初始浓度为零，半无限一维空间内第一类边界条件和第二类边界条件下，利用Bessel方程、Bessel函数和Laplace变换法推导出了可动区和不动区溶质相对浓度的准解析表达式。

In the DU FEL, an additional undulator with period close to the betatron wavelength in the main undulator is introduced to provide an additional mechanism of bunching.

我们建立起了包含了空间电荷效应的DU-FEL非线性理论，并在此基础上对高增益康普顿区及喇曼区DU FEL的增益及转换效率进行了解析分析和数值模拟研究。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。