英语语法分析

All the pigs are slaughtered at about 90 kg liveweight.

所有的猪在活重达90公斤左右时宰杀。

The results showed that there is a high genetic correlation between the liveweight and chest angle 0.425.

结果活重与胸角度、龙骨长间存在较高的遗传相关（0.425、0.4652）。

The different mechanical performances of the modified wood all increased with the increase of liveweight growth rate in a large scale.

随着增重率的增大，处理材的各项力学性能均有较大提高。