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共找到 213 与=Kn 相关的结果,耗时5 ms rss sitemap
力矩的单位可以是kN·m,不宜写成N·km。此题为判断题(对,错)。
立式圆柱形金属罐地基的土壤,要求地质情况均匀,密实性好,耐压力不小于()kN/m2。A.5B.10C.15D.30
φ73mm油管月牙吊卡的承重量是()kN。A.230B.300C.420D.650
As knowledge increased, colleges began to teach______.A. everything that was knownB. law and something about medicineC. many new subjectsD. the subje