GBC is a Freight forwarder specialized in Landbridge multimodal transportation.GBC是一家专业从事欧亚大陆多式联运的物流服务商.NPL is a Freight forwarder specialized in Landbridge multimodal transportation & used container sale.NPL是 一家专业从事欧亚大陆...
起出通井管柱,检查通井规擦痕.Pull out the drifting string and check the gauge for scratch.但下放前要通井,不易过快,下放到预定位置时必须有一套管接箍缝,具承上压能力小.When the bridge plug comes to desired position, there must be a casing coupling seam.广泛应用于油田用修井机 、 通井机及其它...
伴随着隆隆的低沉噪声，螺旋桨开始旋转起来。With a low-pitched rumbling noise, the propeller began to rotate.从走廊里隐约传来了低沉的说话声。There were low, muffled voices rising from the hallway.罗斯压低了声音，然后被达格玛低沉的声音打断了。Rose's voice dropped and was interr...