having two axes (= real or imaginary straight lines going through the centre of a object that is spinning, or lines that divide a shape into two equal halves)

The polymer has biaxial orientation, stretched along both its latitudinal and longitudinal axes. 该聚合物具有双轴取向，沿其纬向和纵向轴线拉伸。

The glass has high tensile strength and can remain unaffected by biaxial strain.

relating to an axis that goes from left to right through the middle of a picture, design, etc., and another than goes from the top to the bottom

The flag has biaxial symmetry, so it looks the same when you turn it upside-down. 这面旗具有纵横双轴对称性，所以当你把它倒过来时，它看起来是一样的。

The parking garage had a biaxial layout, with an elevator near each of the four corners.