The blasting effect of bottom air column charge is studied through a series of crater tests on cement mortar models.

本文通過水泥砂漿模型上的一系列爆破漏斗試驗(yàn)日韩乱伦第一页，研究底部空氣柱裝藥的爆破效果，分析了底部空氣柱長度變化對爆破作用的影響規(guī)律国产伊人A。

On line measurement of pulsed column parameters by air purge is studied.

用吹氣法在線測量脈沖萃取柱參數(shù)欧美一级欧美一级在线播电影。

In this paper, I have studied several key problems of multi-radar data processing in a modern Air Traffic Control system.

本文研究了現(xiàn)代化的空中交通管制中心系統(tǒng)中多雷達(dá)數(shù)據(jù)處理的幾個關(guān)鍵問題。

The applicability of evaporation cooling air conditioning systems in China rural areas was studied.

對蒸發(fā)冷卻空調(diào)系統(tǒng)在我國村鎮(zhèn)的適用性進(jìn)行了分析研究另类欧美97性XXXXX。

The quality changes of pakchoi in cold storage with vacuum cooling and air cooling, at 2℃ for 7 days, 10 days, 14 days, 19 days and 29 days were studied.

摘 要 試驗(yàn)研究了小白菜采后真空冷卻和空氣冷卻后bbixxcon，在2℃條件下冷藏7天、10天最近2018中文字幕MV、14天国语午夜成人三级片、19天和29天的品質(zhì)變化。

In this thesis the related parameters of the air current is studied by using the builtmodel.

利用已建立的模型精品性欧美牲交在线视频，對氣流場的相關(guān)參數(shù)進(jìn)行了研究www..com黄色视频国产。

Several important parameters which could affect the performance of the air curtain were numerically studied.

通過數(shù)值計(jì)算，對影響風(fēng)幕性能的幾個主要因素進(jìn)行了分析研究偷窥精品视频国产免费。

In this thesis, the first stage secondary air network system of a gas turbine is studied.

本文以某型燃?xì)廨啓C(jī)透平第一級葉片的二次空氣系統(tǒng)為研究對象人人人人操在钱伦乱频视。

Finally,the paper presented the problems existed in the aspect of using air hammer for geophysical drilling and the direction of studied d.

闡述了影響沖擊旋轉(zhuǎn)鉆井技術(shù)發(fā)展的主要因素，提出了氣動沖擊器用于物探鉆井開發(fā)方面存在的問題和研究方向影音先锋啪啪av资源网。

This paper presented some main factors affecting the development of revolving-drilling technique.Finally,the paper presented the problems existed in the aspect of using air hammer for geophysical drilling and the direction of studied d...

闡述了影響沖擊旋轉(zhuǎn)鉆井技術(shù)發(fā)展的主要因素国产精品第8页，提出了氣動沖擊器用于物探鉆井開發(fā)方面存在的問題和研究方向。