裂解气 cracked gas 油嘴；开得很小的阀门 cracked valve 破碎机；裂化装置；顿钻中钢丝绳与钻头间加的一段30米长棕绳；定向钻井中为了造斜或减斜在钻头与钻铤间加一段较细的钻杆 crac...
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Cracked valve disc 破裂阀阀板
Check for signs of leakage or cracked surfaces at both ends of tube, exhaust manifold and EGR valve.
检查两个管的末端，排气歧管和EGR阀是否有泄露或表面有裂痕。
After the ND4 diesel locomotive made in France only operated about 30,000 km, the cylinder heads of its AGO diesel engine cracked at the bridge of two-valve seats and other places.
由法国进口ND_4型内燃机车上的AGO柴油机气缸盖，仅运用三万公里左右即在气阀座过桥等处产生裂纹，严重影响机车安全运行。
Fastening bolts at valve on gas tower was cracked after used 6 months.
储气塔运行半年即发生了阀门紧固螺栓的断裂事故。
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