四倍的

The spikes per plant of diploid and tetraploidspecies were higher, but the kernels per spike, 1000 kernels weight and grain yield werelower than those of hexaploid and octoploid species. The NYE, NHI and NPE of diploidand tetraploid were lower; NDE was higher than these of Hexaploid. Variation of NPE andNYE was higher than other NUE indexes, which indicated that NPE and NYE could beused as indexes for NUE differences in different wheat related species.

与普通小麦相比，二倍体和四倍体材料单株穗数较多，但穗粒数、千粒重和产量比较低；氮素籽粒生产效率、氮素收获指数和生理效率比较低，具有较高的氮素干物质生产能力；NYE和NPE的变异性较大，可以作为小麦不同近缘种氮素利用效率差异的主要指标。

To establish the efficient in vitro regeneration system and polyploidy induction system, the effects of hormones in media on shoot regeneration from leaves of plants and the suitable methods of tetraploid induction were studied.

为建立寒富苹果高效的离体再生体系和多倍体诱导体系，以试管苗叶片为外植体，研究了培养基中激素对寒富叶片再生芽的影响及适宜的四倍体诱导方法。

If such gametophytes produce fertile gametes, the resulting sporophyte is then tetraploid, and large polyploid series may subsequently be developed.

如果这种配子体能够产生可育的配子，那么形成的孢子体通常是四倍体，这样就可以得到大量的多倍体。

Dot plot image of DNA fluorescence could form region of diploid and tetraploid in integrated cell.

结果显示：结构完整的细胞DNA的荧光点图形成二倍体、四倍体的区域。

Dot plot image of DNA fluorescence could farm region of diploid and tetraploid in integrated cell.

结果显示：结构完整的细胞DNA的荧光点图形成二倍体、四倍体的区域。

The velocity of sound in water is 4900 ft Per second ,or more than four times its velocity in air

水中的声速成为每秒4900英尺，比空气中的声速大三倍多（直译则为：……是空气中声速的四倍多

Activities during the first floor, fourth floor of the cosmetics area, not only launched the "over 200 arrived in 30", such as buying and buying gifts arrived activities, DIOR, SISLEY, GUERULAIN other international brands has also prepared a beautiful Christmas package, of which Elizabeth Arden is the largest discount mentioned efforts, the additional opening of the "bottle redemption" activities; garment district TIME, JINDO, AQUASCUTUM, ST JOHN, CK brand name and other countries is not only 6, the fold-up for sale, but also carried out 10 times / 20 times the points and the "over 1,000 yuan to send 100 gift card" and other activities, consumers purchase 1800/3800/6800/13800 million meters will also receive a pair of slippers, LABELLE leather gloves, DIOR Dior perfume gift or really I DIOR Dior make-up box, such as Christmas gifts.

活动期间，一楼、四楼的化妆品区不仅开展了&满200抵30&等买抵和买赠活动，DIOR、SISLEY、GUERULAIN等国际名品还准备了精美的圣诞套装，其中伊莉莎白·雅顿更是将优惠折扣力度提到最大，额外开设了&空瓶换购&活动；服装区的TIME、JINDO、AQUASCUTUM、ST JOHN、CK等各国名牌不仅6折起售，更开展了10倍/20倍积分和&满1000元送100元礼品卡&等活动，消费者购物满1800/3800/6800/13800元还将获得几米拖鞋、LABELLE皮手套、DIOR迪奥真我香水礼包或者DIOR迪奥彩妆礼盒等圣诞礼物。

It is made of modern new-type materials by repeated hi-tech compound shaping. Ideal for sunray blocking, it has the following features: small, elegant, easy to use, not taking too much room, and with double alarm system.

它的实际遮阳率高达80%，是太阳挡25%的3倍多，是防爆膜20%的四倍，而且体积小、外形美观、使用方便（拉出来使用仅需10秒钟）、价格适中。

Shares of Baidu, often called China's Google, have quintupled since their late-2008 low and now trade in the U.S.

堪称中国谷歌的百度的股价比2008年底的低点涨了四倍，美国存托凭证市盈率为85倍。

Shares of Baidu, often called China's Google, have quintupled since their late-2008 low and now trade in the U.S. at 85 times the company's profits for the previous year.

堪称中国谷歌的百度的股价比2008年底的低点涨了四倍，美国存托凭证市盈率为85倍（以2009年收益来计算）。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。