It has been known that the self-sterility of conifers results from embryo collapse after self-fertilization.

Several other conifers produce small male catkins.

其它几种针叶树产生小雄花序.

Damage from salt spray affects many other conifers.

许多其他针叶树因药剂喷洒的的影响而受害.

The xylem of ferns and conifers contains only tracheids.

蕨类植物和针叶树的木质部仅含有管胞.

Sarvas discusses the nature of the " lethal load " in conifers.

萨维斯 讨论了针叶树的致死的基因性质.

Firs, spruces and pines are conifers.

冷杉 、 云杉和松树都是针叶树.

In order to achieve the most coning effect, we advise you to close your eyes.

为了达到最佳的演示效果, 我们建议您闭上眼睛.

It'suggests not to use shut-in coning control method to deal with water coning effect.

建议矿场上不要采用关井压锥的方法来克服底水锥进带来的不利影响.

Traditional coning compensation algorithm error greatly increased while angular velocity signal was algorithm input.

以角速率信号作为算法输入时,采用以往常用的圆锥补偿算法,算法误差明显增大.

Using the technique of water displacement and oil recovery to control bottom water coning.

介绍了该方法的原理,即通过调整油水界面上、下的产液速度来实现抑制底水锥进.

Bottom water coning development effect , causing earlier water breakthrough, rapid water cut increase and production decrease.

底水锥进常常使油井过早见水 、 含水上升迅速、产量递减加快.

As a prospect , a kind of new wind turbine generator based on coning rotor is discussed.

最后介绍一种新型锥形转子风力发电机组的设想.

The accuracy of classical coning algorithms monotonically decreased with the increment of coning frequency.

经典圆锥算法的精度具有随着圆锥运动频率降低而提高的单调特性.

Normal coning is less a treatment for infertility than a treatment for vanity.

正常的克隆不是为了治疗不孕,到是满足了虚荣.

I intended to nail him down to coning at six.

我的意图是要他非遵守诺言不可.

Theories about the extinction of dinosaurs are still highly conjectural.

关于恐龙灭绝的理论仍然是带有很强的猜测性的.

As regarded its origin there were various explanations, all of which must necessarily have been conjectural.

至于其来源,则有着种种解释, 当然都是些臆测.

That was a conjecture, not a fact.

那只是猜测，不是事实。

The truth of his conjecture was confirmed by the newspaper report.

新闻报道证明了他的推测果然不假。

Number theory also holds two widely considered unsolved problems: the twin prime conjectureandGoldbach's conjecture.

一些理论还普遍认为解决两个问题: 孪生素和哥德巴赫猜想的猜想.

This conjecture is not supported by any real evidence.

这种推测未被任何确切的证据所证实.