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1·(the idea can arguably be traced back as far as the Hanging Gardens of Babylon, built around 600bc.) So far, however, the idea remains firmly on the drawing board.

(这个想法无疑可以追溯至公元前600年左右建造的巴比伦空中花园)然而，到目前为止，这个想法仍然停留在绘图板上。

2·The causes for the initiation of the spark phenomenon during continuous wire drawing and annealing are traced. Simple measures to extinguish the spark are proposed.

本文对连续拉丝过程中出现铜线表面“打火现象”的原因进行分析，并提出简单的消除方法。