搜索 - 科创

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危险的时代就会对高技术提出要求。现代的检测甄别系统在边界上对人员、货物和车辆进行检测，防止爆炸物、武器以及可能包含病原体甚至核材料等危险品。所有这些威胁共同促生了一个利润丰厚的产业，正如分析家所言，国...

图为太平洋岛屿土著的船货崇拜仪式什么是船货崇拜？背景介绍：喂鸡：货物崇拜（英文：Cargo Cults，又译货物运动）是一种宗教形式，特别出现于一些与世隔绝的原住民中。当货物崇拜者看见外来的先进科技物...

一. 前言最近作者在做一个高压输出的 D2D 电源，用来给电容充电。输出电压 0-2200V 连续可调、输出电流约 200 mA，那么副边基本的唯一选项就是高压整流二极管了。因为手头没有合适的绕线工具...

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