it was pointed out that the redevelopment direction of primary battery technology was to improve the power density of primary batterymend the applicability of battery shape to the electric appliance
指出一次电池技术的发展方向是提高一次电池的功率密度，提高电池外形对电器的适用性
以上为机器翻译结果，长、整句建议使用 人工翻译 。