The sticking steel is one common trouble of drilling equipment and an important cause effecting the high efficiency and high quality drilling of hydraulic drill.
卡杆现象是穿孔设备常见的故障之一，是影响液压凿岩钻机高效率、高质量穿孔的重要原因。
In many kinds of artificial neural networks, BP neural nets is one of the most pioneer and common models, it is successfully applied to equipment fault diagnosis.
在若干神经网络模型中，BP网络模型是人们认识最早、应用最广泛的一种，它也是在设备故障诊断领域应用最成功的一种神经网络模型。
In the field of police equipment, and sometimes need radio and receiver systems to be able to provide real-time live images and sounds, automotive wireless system is one of the common system.
在警用设备领域中，有时需要能够实时地提供现场图像和声音的无线发射与接收系统，车载无线系统就是常见的系统之一。
At that time one could buy small amounts of many common chemicals and I made a little laboratory at home, with improvised9 equipment, to study chemical reactions.
那时，可以少量地买到多种普通化学试剂，我就在家里建了一个很小的实验室，用自制的简单仪器研究化学反应。
At that time one could buy small amounts of many common chemicals and I made a little laboratory at home, with improvised9 equipment, to study chemical reactions.
那时，可以少量地买到多种普通化学试剂，我就在家里建了一个很小的实验室，用自制的简单仪器研究化学反应。
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