The tubing needs to be jacketed .

管道系统需要装护套。

Unshielded category 5 solid polyolefin insulated pvc jacketed horizontal pair twisted cable .

非屏蔽5类实心聚烯烃绝缘聚氯乙烯护套水平对绞电缆。

Unshielded category 5 solid polyolefin insulated pe jacketed horizontal pair twisted cable .

屏蔽5类实心聚烯烃绝缘聚氯乙烯护套水平对绞电缆。

The ebb and flow of financial markets used to conjure up images of yelling , jacketed traders on the floor of an exchange .

金融市场的兴衰，过去常常让人联想起一副这样的画面：在交易所的地板上，穿着夹克的交易员正在大声叫喊着。

Initial cost is comparable to that of by-pass cooled or external cooled jacketed motor .

初期购置成本与旁路冷却或外部冷却加套方案相当。