The principle of the gas detector is described by means of composing frame, hardware design, program flow, etc.
从组成框图、硬件设计以及程序流程及代码等几方面对其进行了介绍。
Torrey says it was no small feat composing shots of the ruins without any tourists in the frame, but even more difficult was chasing the ever-changing angles of natural light.
托利说，想让相框中无一游客进行古迹拍摄并非轻而易举之事，更难的是追逐自然光线千变万化的角度。
Torrey says it was no small feat composing shots of the ruins without any tourists in the frame, but even more difficult was chasing the ever-changing angles of natural light.
托利说，想让相框中无一游客进行古迹拍摄并非轻而易举之事，更难的是追逐自然光线千变万化的角度。
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