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- 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. 針對矩形巷道中由于金屬支護立柱的存在而帶來(lái)的分叉不連續問(wèn)題,提出用分叉波導模型并用模式匹配法和多模傳輸理論分析傳輸特性。
- a pit prop(= one used in a coal mine) 煤礦坑木
- The conservation of pit prop at ancient copper mine 古銅礦遺址地表坑木的保護
- The timber is used for construction, poles, vehicles, pit props, railway sleepers, and wood fiber. 木材用于建設，桿，車(chē)輛，具洼點(diǎn)的支柱，鐵路睡眠者和木頭纖維。
- Effect of Metallic Pit Prop on Transmission Characteristics in Tunnel 金屬支護立柱對巷道無(wú)線(xiàn)傳輸特性的影響
- I had visions of her walking in the snowstorm. 我想像著(zhù)她在暴風(fēng)雪中行走的樣子。
- I saw Xiao Yang walking by, shouldering two hoes. 我看到小揚扛著(zhù)兩把鋤頭從旁走過(guò)。
- He was walking up and down the station platform. 他在火車(chē)站的月臺上走來(lái)走去。
- The children were playing in the sand pit. 孩子們在沙坑中玩耍。
- Effects of the metallic pit prop on the electromagnetic wave cutoff frequency in the rectangular tunnel 矩形隧道中的金屬支護立柱對電磁波截止頻率的影響
- It is too dark outside to allow of walking. 外面太黑了，不能出去散步。
- He is walking to and fro in the room. 他在房間內踱來(lái)踱去。
- He was walking towards town when I met him. 我遇到他時(shí)，他正往鎮上走去。
- My walking stick is the same length as yours. 我的拐杖和你拐杖長(cháng)度一樣。
- The poor old man was just a walking corpse. 那可憐的老頭真是骨瘦如柴。
- Many coal-miners were imprisoned in a pit accident. 在一次塌方事故中，許多礦工被壓在了井下。
- He wouldn't hear of my walking home alone. 他不許我單獨一人走回家。
- He was terribly tired after walking six kilos. 他走了六公里之后就累得不行。
- The pit - prop fell on his head and knocked him out. 坑木掉在他頭上，把他打昏過(guò)去。
- The managers want to pit the champion against John. 經(jīng)理人想讓冠軍與約翰比賽。
