A. N. S. I. Standard b16.1-covers cast iron pipe flanges and flanged fittings (Class 125 and 250).
标准B16.1 -包括铸铁管道法兰和法兰连接件(125磅级和250磅级)。
Starting from N-S equations of fluid mechanics, the flow mathematical model of two-phase flow in pipe is established.
从流体力学中的N - S方程出发，建立了圆管两相分层层流的流动数学模型。
N you used to smoke a pipe, didn't you?
你过去一向是抽烟斗的，对不对？
This indicates that N-methyl pyrrolidone is superior to naphthalene in comprehensive heat transfer performance and is suitable to be used in moderate-temperature heat pipe.
实验表明N—甲基吡咯烷酮综合传热性能优于萘，可望作为中温热管工质使用。
This indicates that N-methyl pyrrolidone is superior to naphthalene in comprehensive heat transfer performance and is suitable to be used in moderate-temperature heat pipe.
实验表明N—甲基吡咯烷酮综合传热性能优于萘，可望作为中温热管工质使用。
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