This paper describes the major design problems of three layer lap-joint and multi-stage dosing asphalt sprayer and introduces the selection of the domestic truck chassis.
本文对三层搭接多级定量沥青洒布车的设计主要问题加以论述，并介绍如何正确选用国产汽车底盘。
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The Boeing 737-300 in question was only 15 years old when its skin peeled open along a riveted lap-joint while flying above 34,000 feet (just over 10,000 metres) with 118 passengers on board.
The results shown that a deformation-free joint with good weld surface appearance can be obtained with suitable welding conditions for butt-joint and lap-joint of the dissimilar materials.