您要查找的是不是：
- A fork waveguide model is proposed and the mode matching and multi-mode network technique are used to analyze the transmission characteristics of rectangular tunnel with metallic pit prop. 针对矩形巷道中由于金属支护立柱的存在而带来的分叉不连续问题,提出用分叉波导模型并用模式匹配法和多模传输理论分析传输特性。
- a pit prop(= one used in a coal mine) 煤矿坑木
- The conservation of pit prop at ancient copper mine 古铜矿遗址地表坑木的保护
- The timber is used for construction, poles, vehicles, pit props, railway sleepers, and wood fiber. 木材用于建设，杆，车辆，具洼点的支柱，铁路睡眠者和木头纤维。
- Effect of Metallic Pit Prop on Transmission Characteristics in Tunnel 金属支护立柱对巷道无线传输特性的影响
- The children were playing in the sand pit. 孩子们在沙坑中玩耍。
- Effects of the metallic pit prop on the electromagnetic wave cutoff frequency in the rectangular tunnel 矩形隧道中的金属支护立柱对电磁波截止频率的影响
- Many coal-miners were imprisoned in a pit accident. 在一次塌方事故中，许多矿工被压在了井下。
- Prop the door open with a brick. 用砖块撑门使其开著。
- The government refuses to prop up inefficient industries. 政府拒绝补贴效益不佳的行业。
- The managers want to pit the champion against John. 经理人想让冠军与约翰比赛。
- The pit - prop fell on his head and knocked him out. 坑木掉在他头上，把他打昏过去。
- The managers want to pit the champion against an unknown. 经理们想让冠军与一名未成名的选手比赛。
- It is not the government's policy to prop up declining industries. 资助不景气的工业不是政府的政策。
- A hole or pit, especially one in a road surface. 坑洞尤指路面上的涡穴或坑洞
- The government does not intend to prop up declining industries. 政府无意扶持不景气的企业。
- Mr. Helton was the hope and the prop of the family. 希尔顿先生成了一家的希望和支柱。
- Having the form of a thin plate or lamella. 薄片形的有薄片或鳃瓣状形体的。
- Prop the gate open with a brick. 用一块砖支着大门让它开着。
- There is not lamella in the ingot. 钢锭没有明显的片层状组织。
