第二世代

试验自1976年开始，至1981年积累了6年第二世代稻纵卷叶螟生命表的数据。

The life tables and average life table of1976-1981 have been constructed .

第二世代为与第一世代近共轴的具轴面褶劈理的近水平直立片理褶皱；

The second one , nearly coaxial with the first one , is composed of subhorizontal upright schistosity folds with axial crenulation .

另一种以铁闪锌矿为标志，矿体呈似层状、脉状及不规则状等，靠近岩体接触带或断裂与赋矿层的交汇部位产出，代表了成矿第二世代。

Marmatite is the guide mineral of the second ore type which appears in bedded , veined and irregular ore bodies near contact zone of magmatic rock or joint positions between faults and ore beds .

对丝羽乌骨鸡肉用新品系第一世代和第二世代的体重累积生长曲线和日增重曲线的比较表明：第二世代的生长曲线比第一世代的波动小，生长高峰提前了两周。

By describing growing curve of body weight and average daily gain of the first and second generation on silkies , the latter is found more steady and growing peaks is shortened by two weeks .

第一代与第二代世代具有明显高峰期，第三代与第四代世代重叠严重。

The first generation and the second generation can observed obvious population peak , but the third generation and the fourth generation overlapping is common .