1、試驗經過 接到第七期有色金屬的介紹及總局通知後,在6月8日領導上即召集了技術人員、幹部、機工先進者,進行研究討論,大家一致决意接受蘇聯經驗,乃成立了兩個試驗小組,由6月11日至21日在立山线及下戲台共計試驗了5次炮,平均每二天一炮,這種緩慢的原因,首 1, After receiving the introduction of the 7th nonferrous metal and the notice from the General Administration of Customs, the trial convened technical leaders, cadres and advanced mechanics on June 8 to conduct research and discussion. All of us unanimously resolved to accept the Soviet experience and set up A total of two test groups were set up. From June 11 to 21, a total of 5 artillery tests were conducted in Tateyama Line and Nakatsuki Station, with an average of one gun every two days. For the slow reason, the first