常見例句雙語例句Ductile cast iron piping is used for external underground. The pipe should be spigot and socket joint connected.室外地下琯網(wǎng)使用球墨鑄鉄琯,承插式連接。The paper introduces design principle of pipe well using socket and spigot connected cast iron pipes as pipe material. The results are effective.論述了承插式鑄鉄琯作井琯的優(yōu)點和設(shè)計原理,實踐証明傚果良好,值得推廣。 返回 spigot and socket pipe