nittyadj.多虱卵的nitn.虱子；没用的人Nitella pseudohyalinan.拟无色丽藻nitrocellulase powder硝化纤维,素炸药nitrification process硝化法nitro-chlorobenzene硝基氯苯Nitella graciliformisn.细形丽藻nitrotrichloromethanen.[化] 硝基三氯甲nitroglycerine powder硝化甘油炸药nitroacetyl cellulose硝酸乙酸纤维素,硝酸醋酸纤维素nitrongenase activity固氮活性Nitzschia acutiusculan.微短尖菱形藻