垫土 meaning in English

wood pad

And on such a basis , it is suggested that under the artificial soil order , a new soil type , " engineering disturbed soil " , be established , and based types of disturbance , this type of soil be further divided into engineering heaped soil and engineering sinking soil
最后建议在人工土纲下独立出一土类“工程扰动土类” ，并根据扰动类型的不同，将工程扰动土分为工程堆垫土、工程下陷土。