The research on steel-structural building is at an early stage of exploration, and the steel-structural residence system is not mature.
我国的钢结构住宅研究处于探索起步阶段，整个体系还不成熟。
RT PCR analysis showed that the maternal mRNAs of the gibel carp M3 CK gene was detected in mature eggs and early stage embryos.
RTPCR表明，银鲫M3CK基因在成熟卵母细胞和胚胎发育早期可检测到少量的转录产物，在胚胎发育期间从肌肉效应期开始转录，并一直持续表达。
Mulch with film can increase the ground temperature in early growth stage of early mature potato.
覆盖地膜后，对早熟马铃薯生长前期具有明显的增加地温作用。
Mulch with film can increase the ground temperature in early growth stage of early mature potato.
覆盖地膜后，对早熟马铃薯生长前期具有明显的增加地温作用。
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