What does "tension in poetic language" mean?

The so-called poetic language "tension" is a critical term advocated and practiced by the British and American New Criticism. Generally speaking, it can be regarded as an organism of the whole poem, but it contains the contradiction and dialectical relationship of * *. A poem, on the whole, must be organic and holistic, but all kinds of contradictions and tensions are allowed and should be filled in. Poetry full of tension can be profound, chewy and memorable. Because only such poems are not static, but "moving in silence". For example, although the full bow is still, it is full of energy and strength that can erupt at any time. Tension structure exists between muscle and frame, between image and image, between intention and intention. The unique tension structure should be said to be a mystery of the artistic charm of this poem.