Minimizing the genetic drift in fertility was key to the purification and reproduction of thermo photo sensitive genic male sterile (TPSGMS) lines of wheat.
最大限度控制育性的遗传漂移，是小麦温光敏核不育系提纯中要解决的主要问题。
2
Technically, this so-called mechanical reproduction method is dependent on using the camera shutter and sensitivity of a photo development to create a false objectivity.
所谓机械复制手段，在于通过快门和感光，形成一个虚假的客观。
3
The original thing of a physical evidenceor the reproduction, photo, or visual recordings that are verifiedas identical with the original thing of the physical evidence;