Waves oscillate back and forth. Add two waves together and you get a new compositewave.
波会来回振动，而使两列波相遇你会得到一列新的混合波。
2
The research shows that the design value combines tidal level and wave by composite frequency method is considered to be the reference for design levee elevation.
该研究表明，可采用组合频率法推求的潮位与波浪组合设计值作为制定海堤设计高程的依据。
3
The link of steel sheeting with concrete in a composite deck slab relies on vertical wave troughs and indentations.