longitudinal joints

基本解釋

There are no key-ways made in the upper longitudinal joints in Fengman Dam and no grouting before impounding.
豐滿大壩縱縫上部未設鍵槽，蓄水前又未灌漿；
Joints such as transverse and longitudinal joints, and cracks caused by all kinds of factors are quite common in concrete dams.
混凝土壩工程橫縫、縱縫，以及由于各種因素引起的混凝土裂縫是普遍存在的。
The results demonstrate that the thermal stress could meet the design criteria even without longitudinal joints so long as placement temperature is controlled reasonably.
計算分析表明，只要合理控制澆筑溫度，即使不設縱縫，壩體溫度應力也能滿足設計要求。