?潜水艇 U-boat
?国际铁道联盟 UIC (= International Union of Railways)
?美国保险商实验室协会 UL (= Underwriters‘ Laboratories, U.S.A.)
?舱壁甲板 ulkhead deck
?液面上距[离] ullage
?液面测距板 ullage board
?液面孔 ullage hole
?液面[测距]孔塞 ullage plug
?液面测距孔 ullage port
?油面测距孔 ullage port (oil tank)
?液面计 ullage scale
?液面计 ullage stick
?国际铁道联盟 UIC (= International Union of Railways)
?美国保险商实验室协会 UL (= Underwriters‘ Laboratories, U.S.A.)
?舱壁甲板 ulkhead deck
?液面上距[离] ullage
?液面测距板 ullage board
?液面孔 ullage hole
?液面[测距]孔塞 ullage plug
?液面测距孔 ullage port
?油面测距孔 ullage port (oil tank)
?液面计 ullage scale
?液面计 ullage stick
?油面深度容积表 ullage table
?轴承极限能力 ultimate bearing capacity
?极限弯[曲力]距 ultimate bending moment
?极限强度 ultimate strength
?极限应力 ultimate stress
?极限抗拉强度 ultimate tensile strength
?极限浸水强度 ultimate wet strength
?超级油轮 ultra large crude oil carrier (ULCC)
?超浅吃水船 ultra shallow draught vessel (USDV)
?超短波 ultra-short wave
?超音波探伤器 ultra-sonic detector
?超音波燃油处理装置 ultrasonic fuel oil treatment unit
?超音波检查 ultrasonic inspection
?超音波[探伤]试验 ultrasonic testing (UT)
?超音波测厚器 ultrasonic thickness indicator
?紫外线 ultra-violet
?电力信号传送脐索 umbilical cable
?伞形天线 umbrella antenna
?原质区(焊接) unaffected zone
?不均衡力 unbalanced force
?不均衡[力]距 unbalanced moment
不平衡舵 unbalanced rudder
?不平衡舵 unbalanced rudder
?卸压载 unballast
?哥伦比亚国家标准 UNCO (= Una Norma Colombiana, Colombia)
?无阻尼自然频率 undamped natural frequency
?无阻尼摆动,无阻尼振荡 undamped oscillation
?无阻尼振动 undamped vibration
?无阻尼波,等幅波 undamped wave
?网架尾拖车(货柜) undecked skeletal semitrailer
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