包钢

In this paper, a full flow model is given for calculating the average residence time of molten steel in non-symmetry multi-strand tundish to analyze flow pattern, the model is as follow:〓 The model can be used to calculate the volume fraction of the dead area、the piston flow and the mix flow, and is satisfactorily applied to the water model of three-strand tundish of Guangzhou Steel Works to analyze the data of the experiment.

本文认为在研究中间包内高温钢水的流动问题时，应该考虑钢水密度变化这个条件对钢水流动的影响，这样其结果更符合实际钢水流动规律。本文针对非对称多流中间包，提出了全流量模型计算多流中间包钢水平均停留时间：〓该模型也能够很好地计算多流中间包的死区、活塞流区、全混流区体积分数。

Briefly described measures taken in purifying the liquid steel to improve steel quality such as expansion of tundish capacity,installation of stop plate,separating wall,overflow dam and ceramic filter at the tundish and adoption of high basicity flux as well as reheating of liquid steel in the tundish.

简述了通过中间包扩容；在中间包内增设挡扳、隔墙/溢流堰、陶瓷过滤器，采用高碱度中间包保护渣以及中间包钢液加热等措施，净化钢水，提高钢的质量。

Extremely Durable - featuring a steel armoured cable (rubber-coated), a reinforced covered steel headband and replaceable ear-pads

非常耐用-具有钢铁铠装电缆，包钢加固的头箍和更换耳垫

In 1980's, Shanghai Electric Furnace Works have manufactured six heat treatment lines which are coproduced with four companies of America, Canada and Germany, and are used for treating petroleum drills,high strength fastening, gears, big bearing sleeves and Ni-covered coin blanks.

上海电炉厂在80年代先后同美国、加拿大、德国的四家电炉公司合作生产了六条分别供石油钻头、高强度紧固件、齿轮、大型轴承圈和镍包钢币坯等热处理用的生产线。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。