The whole thing is electrified. At the corners of the complex are concrete towers, their tops bristling with searchlights, scanning gear, and automated SENTRY GUNS.
围墙的每个角落都建有一座高塔 上面林立着探照灯 扫描设备以及自动机枪。
The metallurgical structure and fracture morphology on gear transmission shaft of 45 steel were analyzed by means of optical microscope and scanning electron microscope.
采用光学显微镜、扫描电镜等分析手段，对45钢大齿轮传动轴断裂表面的金相组织、断口形貌进行了分析和检测。
Experimental techniques such as optical microscopy and scanning electron microscopy were used to study fracture of press eccentric gear main shaft.
采用扫描电镜及光学显微镜对压力机偏心齿轮主轴断口进行了系统的分析。
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