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- The water is infiltrating the gravel bed. 水正滲透進(jìn)碎石底層。
- A stretch of damaged track ran about 150 yards along the accident site, ties ripped from the gravel bed and the rails twisted. 損壞的鐵軌一直延伸到距事故地點(diǎn)150碼遠處，沙礫層上的固定結裂開(kāi)了，鐵軌也扭曲了。
- In the meanwhile, the result also show that the section configuration and near watercourse characteristic has influenced gravel bed load transport rate. 河床斷面形態(tài)及其相鄰河道特性對輸沙率也有較大的影響。
- Biofilm decompose on the surface is the primary removal mechanism.The gravel bed subsurface constructed wetland was used to investigate the removal efficiencies of SS, NH4+-N, BOD5, and PO43-. 于關(guān)渡取用舊貴子坑溪溪水，為接觸曝氣及地下礫間處理復合式人工濕地，主要之污染去除機制為生物膜對污染質(zhì)之分解。
- Our constant flow gravel bed system grows lettuce about 20% better than a reciprocal flow.Gravel beds and floating rafts are about 15-20% more efficient than NFT. 我們采用連續流礫石植床種的萵苣的產(chǎn)能比間歇灌溉的系統高出20%25，礫石植床與浮板與NFT高出15-20%25的效率。
- The ancient gravel beds in the suburbs of Nanjng is one of the important types of rock of the Cenozoic era. 南京附近的古礫石層是組成該區新生代地層重要巖石類(lèi)型之一。
- The Neogene deposits with hominoid fossils in the Xiaohe - Leilao area, Yuanmou, Yunnan, are a se-quence of purple pebbly fine sandstone-siltstone with several yellow gravel beds. 云南元謀小河-雷老一帶含古猿新近系（上第三系）是一套紫紅色含礫細砂-粉砂巖，夾有多層黃色砂礫石層。
- Test and study on AYT type of gravel bed load sampler AYT型礫卵石推移質(zhì)采樣器試驗研究
- The brook warbled over its rocky bed. 小溪潺潺流過(guò)多石的河床。
- My father scratched gravel for Shanghai last night. 我父親昨晚匆匆忙忙去了上海。
- The prospector panned out bits of sand and gravel scooped from the bed of a stream. 探礦者淘選從河床里挖出的少量含金泥沙和砂礫。
- The road is covered with gravel. 這路用礫石鋪成。
- She rushed off to work leaving her bed unmade. 她匆忙去上班連床都沒(méi)鋪好。
- We bumped up and down along the gravel path. 我們沿礫石小路顛簸而行。
- Aerodynamic Roughness of Gravel Beds 礫石床面的空氣動(dòng)力學(xué)粗糙度
- A mosquito netting completely surrounds our bed. 一頂蚊帳把我們的床完全圍住了。
- It was hard work getting the children off to bed. 哄孩子們去睡可不是容易的事。
- I threw off my clothes and tumbled into bed. 我脫掉衣服倒在床上便睡了。
- I usually go to bed at half past ten. 我通常十點(diǎn)半睡覺(jué)。
- The gravel ingredient of concrete. 石碴組成混凝土的砂料
