其原因就是培养基、样品数量发生变化而形成新的培养条件。
This is due to the changes to media and sample quantities and the new incubation conditions.
结果表明，肥力中-低等样品数量占总量的53%，吉林黑土总体肥力状况不容乐观。
Results show that soil with moderate-low fertility quality occupies 53% of Jilin black soil, which demonstrates that there is a worse fertility condition of Jilin black soil.
于是在第二轮的C -14分析中，莱维提供了两倍的样品数量，又细致的选择了来自于带有可检验外层年轮的灌木木炭样本。
For his second round of C-14 analysis, Levy doubled the number of samples and meticulously selected charcoal from shrubs with verifiable outer growth rings.
于是在第二轮的C -14分析中，莱维提供了两倍的样品数量，又细致的选择了来自于带有可检验外层年轮的灌木木炭样本。
For his second round of C-14 analysis, Levy doubled the number of samples and meticulously selected charcoal from shrubs with verifiable outer growth rings.
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