The completion of the foundation buried stone heads, four measurements, a flat wire measurement, substandard level of measurement, map the root control field data collection and data editing.
完成了基础埋石、首级四等测量、一级平面导线测量、等外水准测量、图根控制等野外数据采集以及数据编辑工作。
The condition inbwhich the arc is buried are that the parameters such as CO_2 gas, thick wire, high current and low voltage should be used.
不过CO_2焊射滴过渡只能发生在潜弧状态下,产生潜弧的条件为在CO_2气氛中,使用粗焊丝,大电流和低电压的配合参数。
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