rain gutter造句

• 4 . keep all drains like rain gutters , drain holes and surface channels free from blockage
  4 .保持所有排水渠道如雨水渠排水槽及去水管道畅通无阻
• Clean your gutters regularly . dry leaves and evergreen needles in rain gutters can easily catch fire
  定期清洁你的排水沟。在雨中排水沟堆积的乾的叶子和常绿植物针叶会很轻易地著火。
• " there will be rows and rows of small rain gutters and each one will have a little cover on it with little square holes
  涵特说明：农场里有一排排的水槽，水槽盖上有一些小方洞，而农作物会从小方洞里长出来。
• Four tem - horn antennas have been made . using these antennas two - element rain gutter tem - horn array , two - element stacked tem - horn array , four - element rain gutter tem - horn array and four - element stacked tem - horn array are been mades up of . the results of experiment accord with theory and numerical stimulation
  最后，对tem喇叭天线阵列进行了原理性实验研究，设计了带地板结构的半tem喇叭天线，组成二元槽状阵列、二元叠状阵列、四元槽状阵列、四元叠状阵列等，应用小信号测试，得到的结果与理论和数值模拟相一致。