The design of the melting zone for extruder screw was optimized.

讨论了挤出机螺杆熔融段的优化设计问题。

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Combined with the former experiment for solid conveying zone and melting zone, the torque for extruding zone was obtained.

结合课题组过去所做的固体输送段和熔融段两段的实验，得出了各实验条件下螺杆挤出段的扭矩。

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The improvement results from a change in the essential constitution of the soft melting zone when charged with an ore and coke mixture.

获得改善的原因在于混装时软溶层的结构发生了质的变化。

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Chile's dry summer climate in the central zone, where rich land is watered by the melting Andean snows, is comparable to the best of California or New Zealand.

ECONOMIST: Chile