The power of the beam is concentrated on a single-ring structure and has an extremely strong radial intensitygradient.
理论分析和实验结果表明：光束的单环结构使光能量集中在一个环上，而环的边缘沿径向有极高的强度梯度。
2
There clearly exists a strain intensitygradient and compression rate gradient within the country rocks so that both strain intensity and compression rate increase toward the contact surface.
热接触变质围岩内应变强度和压缩率向岩基接触面方向递增，存在较明显的应变强度梯度和压缩率梯度。
3
The induction force is yielded by the non-uniformity of the field intensity which depends on the gradient of field components.