This is based on some longer time frame support or resistance, or on the test of a previous significant high or low.
这是根据长期的时间周期的支撑或阻力决定的，或者是根据对前期高低点的测试来做决定的。
Plated frame, high backrest, adjustable backrest Angle, after bending handrails, lift foot care, solid front, pneumatic rear wheel plastic wheel frame, folding handle support.
电镀车架，高靠背，可调靠背角度，后折弯扶手，升降脚托，实心前轮，塑料轮框充气后轮，可折支撑把手。
During construction of high formwork support frame, collapse accident usually occurs because of cantilever length of adjustable jacking of steel tubular scaffold with couplers.
建筑模板工程施工中，特别是高大支模架体施工中，往往出现扣件式钢管架体顶部可调顶托的悬臂长度过长，导致架体坍塌事故。
During construction of high formwork support frame, collapse accident usually occurs because of cantilever length of adjustable jacking of steel tubular scaffold with couplers.
建筑模板工程施工中，特别是高大支模架体施工中，往往出现扣件式钢管架体顶部可调顶托的悬臂长度过长，导致架体坍塌事故。
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