at high n level mo fertilizer remarkably raised grain yield, while at low n fertilizer level, the response was instable.
在高n水平下施钼小麦增产显着;低n下施钼增产不稳定。
the revolutionary changeover from food-hunting nomads to farmers who raised grain and domesticated animals would occur in the last 60 seconds.
从四处寻食的游牧人群到种植粮食、饲养畜禽的农民的革命性转变,到最后60秒才发生。
the theoretical analysis was made on the causes of raised grain defect during the fabrication of lattice mesh plate in the numerical control small punch spinning drying equipment.