凹凸 [āo tū]

• concave-convex:

  uneven; irregularity; rough; sags and crests; roughness

  凹凸不平

• 短语:
  • 凹凸边 rabbet;
  • 凹凸度 camber;
  • 凹凸缝 bulky joint; keyway;
  • 凹凸板 buckle plate; buckled plate;
  • 凹凸花纹 abbatre;
  • 凹凸接板 tabled fish plate;
  • 凹凸节齿 snags （钢芯两头的）;
  • 凹凸镜 concave-convex lens; concave and convex lenses;
  • 凹凸螺钉 socket screw;
  • 凹凸砌合 {建} out-and-in bond;
  • 凹凸榫 rebate;
  • 凹凸榫接 grooving;
  • 凹凸榫接混凝土板 rebated concrete slab;
  • 凹凸透镜 concavo-vonvex lens; meniscus lens;
  • 凹凸纹 raised grain;
  • 凹凸纹轧花机 gauffer calender;
  • 凹凸印刷 embossing; die stamping;
  • 凹凸印刷机 embossing press; die stamping press;
  • 凹凸轧花 {纺} embossing;
  • 凹凸织物 piquê;
  • 凹凸绉 pique crepe