在垦复、施肥等集约培育的纸浆毛竹林中，实施砍伐4、5年生竹（竹龄均为周年），竹材产量与砍伐6、7年生竹的一般材用竹林相若，差异不显著。
There is no obvious difference of the culm yield between culm cutting age of 4~5 and 6~7 years old in the bamboo stands, which are intensively cultivated by soil digging and fertilization.
钢包内衬在使用至中、后期进行喷补维护，在延长包龄、适应全连铸快节奏生产需求的同时，降低了钢包内衬耐材消耗。
Meanwhile, gunned lining can reduce the refractory consumption on ladle liner and prolong the life span of the ladle and adapt to the fast speed CC production.
以黄土旱原成龄杏树为试材，系统地研究了不同年龄结果枝组的生长结果特性。
The growth and fruiting capacity of the reproductive branch complex at different ages has been systematically studied.
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