gas and sand anchor  气砂锚

sand—sand juxtaposition  砂岩对接

coastal sand and continental shelf sand  海岸砂和大陆架砂

concial sand from coarse sand  粗砂锥辗硅砂

dike of sand pile and sand quilt  砂桩砂被堤

prevent sand and confrol sand  防沙治沙

Sand-Blowing and Sand-Filling Ground Leveling  吹填砂场平

driving anchor [= floating anchor  漂流锚; 海锚

a rope of sand  不牢固的结合

Abandoned sand excavation land  挖沙废弃地

Accumulated sand permeability  堆积砂渗透率

acoustic sand probe  声波探砂器

acre foot of sand  叶绿体; 英亩-英尺砂岩; 一英尺厚的一英亩产层

acrefoot of sand  英亩灿⒊呱把遥灰挥⒊吆竦囊挥⒛恫层

acrylic sand mortar  丙乳砂浆

Active sand dune  流动沙丘

Active Sand Filter  活性砂过滤器

Adding Sand Fracture  加砂压裂

additional sand  外加河沙