90mm
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Multilevel-tension PLC control system of Φ 90mm reversible experimental four high mill
Φ90mm实验型四辊可逆轧机多档张力PLC控制系统
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Splitting failure analysis of the φ 90mm low chromium casting alloy ball during the falling ball test
φ90mm低铬铸球开裂失效分析
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Normally , the maximum crack length after perforation of casing pipe must not exceed 90mm ;
通常规定,油层套管射孔后裂孔率不得超过30%,孔裂长度最长不得超过90mm。
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Development of Φ 90mm metal packer
Φ90mm金属封隔器的研制
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In this paper we discussed the design method of the small-scale acoustic compressor used to drive thermoacoustic refrigerators with transitional size ( 90mm ) under stationary working condition .
本文主要讨论了给定工况下、过渡尺寸(90mm级)的小型热声制冷机用声压机的设计计算方法,并给出了设计结果。
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The work piece is made of steel 45 with the size of 12 5mm × 12 5mm × 90mm . The reliability of the model has been testified by comparison of the simulation and the experimental results .
对尺寸为125mm×125mm×90mm的45钢试样的瞬态传热过程进行三维模拟,验证了模型的可靠性。