Internal feedback cascade speed control system is proved to have a good cost performance and can be used on large and medium type fans extensively.

内反馈串级调速系统是一种具有优良的性能价格比的调速节能设备，适合于电厂的大中型风机调速节能运行。

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Virus free potato seedlings from tubes: Kexin No. 4 and Zaodabai were used as experimental materials. The effect of illumination and medium type on potato micro-tuber inducement were studied.

以克新4号、早大白脱毒试管苗为材料，研究了光照和培养基类型对马铃薯微型薯诱导结薯的影响。

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The type of callus was an important factor affecting whole plantlets differentiation, and there was a relation between plantlets differentiation and organ origin of callus, as well as medium type.

愈伤组织类型是影响植株分化的重要因素。愈伤组织的器官来源和培养基也对植株分化有影响。

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"He wants to be back in F1 in 2011 but with all the money he has earned he doesn't want to go in a medium-type team for money, " Robertson added.

BBC: Raikkonen rejects F1 for rallying

Meanwhile, June contract put options provided the medium for a different type of bullish play today.

FORBES: Shire Options Command Attention, Bulls Chase Skechers

By type, medium-sized cars and SUVs registered some of the largest increases.

FORBES: China Passenger Car Sales Surge In January