查询词典 conifers

Furthermore, the conifers, which are among the tallest trees, have unusually low root pressures.

如果水不是被泵到高树的树顶，也不是被推到树顶，那么我们会问：它是怎样到达树顶的呢？

FOR EXAMPLE, THE SPIRAL ARRANGEMENT OF SCALE-BRACT COMPLEXES ON OVULE-BEARING PINE CONES, WHERE THE FEMALE REPRODUCTIVE ORGANS OF CONIFERS ARE

例如，带有胚珠的松球的鳞苞综合体的螺旋状安排，亦即松柏目植物雌性殖器官的所在

Tall Paleozoic trees superficially resembling modern screw pines; structurally intermediate in some ways between cycads and conifers.

一种高大的古生代树木，外表与现代的露兜树相似；结构上介于苏铁和针叶树之间。

Cycads and ginkgo have motile sperm, unlike gnetophytes and conifers, which produce pollen.

苏铁和银杏具活动精子可区别于买麻藤和松柏类，它们不产生花粉。

A crystalline acid found in the exudations of some conifers.

一些松类植物的渗出物中发现的晶状酸。

The result showed that mycorrhiza inoculation was beneficial to the conifers,the volume weight of the medium and the contents of P,soluble P were major factors influencing seedling growth.

结果表明：菌根接种对培育针叶树容器苗非常有利。基质的容重、全磷和速效磷的含量是影响油松容器苗生长的主要因子。

In many xerophytes and in some conifers of cooler climates, where soil water may be difficult to obtain in winter, the guard cells-and hence the stoma-are sunk in pits in the epidermis, often protected by hairs form passing air currents. TRANSPIRATION rates are thus greatly reduced, while allowing gaseous exchange for photosynthesis.

一些旱生植物和寒冷气候带的针叶树在冬季很难从土壤中得到水分，因此它们的保卫细胞和气孔在表皮上下陷成为气孔窝，常被表皮毛保护，可以在满足光合作用所需的气体交换的同时防止通过的气流带走大量水分，大大降低了植物呼吸率。

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。

Wood that is easy to saw (from conifers such as pine or fir).

容易锯的木材（取自松树、杉树等针叶树）。

For a moment - only for a moment - when they were in the turning of the drive, between the tall rhododendrons and conifers, before the lodge became visible, he inclined his face towards her as if - but, no: he thought better of it, and let her go.

同时，苔丝因为是把她的父母拖进泥淖的人，所以心里一直在默不作声地盘算着怎样帮助他们从泥淖里摆脱出来；后来，她母亲就开始同苔丝商量她的计划。

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。