A pilot battery should be used for observation of forming progress, until such time that uniform experience indicates that such attention is not needed.

 
  • 需用一個(gè)領(lǐng)示的電池來(lái)觀(guān)察形成過(guò)程,直到實(shí)驗結果均一,無(wú)須加以注意時(shí)為止。
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