engine bed extension 发动机加长基座
bed extension 床伸展器
extension bed lathe 接长床身车床
extension n bed lathe 接长床身车床
The IP anomaly tends to extend considerably at the northeast and southwest ends, which might reflect outward extension of the deep sulfide ore bed.
沿走向，激电异常在北东、南西两端有大幅度向外延伸趋势，可能是深部硫化物矿层向外延伸的反映。
The contagion is the major channel for GinsengBlight extension in the soil of Ginseng-bed.
接触传播是参床土壤中人参疫病根腐扩展蔓的主要方式。
Current test results mean: this test bed is of great value to application and extension.
实际试验结果表明：该耐久性试验台具有一定的应用和推广价值。
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