Methods Primers were designed according to certain species' NADH-ubiquinone oxidoreductase ND4 in which the DNA sequence had been reported.
方法根据已报道的若干物种的NADH脱氢酶亚基4基因(nd4)设计引物。
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。
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。
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