He clearly USES a high elbow anchor position on his left arm.
他的左臂很明确使用了高肘。
The anchor-arm static-pressure pile can be used not only in buildings' foundation engineering but also in the reinforcement construction of large bridge pile foundation.
锚杆静压桩不仅能在建筑基础工程中应用，而且能在大型桥梁桩基加固补强施工中应用。
This paper introduces the design, application and construction techniques of anchor-arm static-pressure pile in the reinforcement of bridge's boring pile foundation.
介绍了锚杆静压桩在桥梁钻孔灌注桩加固补强中的设计、应用及施工工艺。
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