荒漠

Its uninviting surface is marked by mesas and buttes, and barren stretches of parched desert hardpan.

它那缺少生机的表面可以看见的只有台地、山丘以及一路延伸、贫瘠、布满坚硬沙砾的荒漠。

Hot desert vegetation includes thorny shrubs, ephemeral annuals, underground corms and bulbs, and succulents, such as cacti.

植被 热荒漠的植被包括多刺的灌木、一年生的短命植物、地下的球茎、鳞茎和肉质植物如仙人掌。

Thou crossest desert lands of barren years to reach the moment of fulfillment.

你穿过贫乏岁月的荒漠，以到达那完成的一刻。

Thou crossest desert lands of barren years to reach the moment of fulfilment.

您穿越荒漠的岁月而达到了完满的时刻。

Thou crossest desert lands of barren years to reach the moment of fulfillment.

您穿越贫瘠岁月的荒漠抵达圆满的瞬间。

In recent years, research on conservation and restoration of desert ecosystems has attracted widespread attention.

近年来，荒漠生态系统保护和恢复的研究已受到广泛关注。

The main aim of the present study was to address: 1 ） the photosynthetic characteristics and the biomass allocation traits of spring ephemerals and 2） the relationship between these traits and unique growth pattern of these spring ephemerals. Methods In vivo photosynthetic traits of 16 spring ephemerals at their growth stages were measured by an open gas-exchange measurement system （Li-6400） and biomass allocation patterns were measured in seven species.

该文运用Li-6400开放式气体交换光合作用测定系统，对分布于准噶尔荒漠的16种早春短命植物生长盛期的净光合速率、蒸腾速率、水分利用效率等特征进行了测定，并对其中7种植物与生长相关的生物量分配特征进行了分析。

The main aim of the present study was to address: 1 the photosynthetic characteristics and the biomass allocation traits of spring ephemerals and 2 the relationship between these traits and unique growth pattern of these spring ephemerals. Methods in vim photosynthetic traits of 16 spring ephemerals at their growth stages were measured by an open gas-exchange measurement system (Li-6400) and biomass allocation patterns were measured in seven species.

该文运用Li-6400开放式气体交换光合作用测定系统，对分布于准噶尔荒漠的16种早春短命植物生长盛期的净光合速率P(下标 n、蒸腾速率T(下标 r、水分利用效率等特征进行了测定，并对其中7种植物与生长相关的生物量分配特征进行了分析。

As pioneer plants, desert spring ephemerals play an important role in community succession, biodiversity maintenance and dune stabilization in desert ecosystems. We studied the diurnal changes in gas exchange of three desert spring ephemerals (Eremopyrum orientale, Malcolmia scorpioides, and Tetracme quadricormis, hereafter the genus names only) under natural conditions in the desert area of the Dzungaria Basin.

采用LI-6400便携式光合测定仪，在晴天条件下对准噶尔荒漠3种典型短命植物东方旱麦草、卷果涩芥和四齿芥的气体交换特征的日变化规律进行了研究。

Sequoia and giant fir is of high quality wood, a very wide applicability, can be used as Zaofang Zi, furniture, rail fence Zhenmu and wood piles.

巨杉最多可活4000年，寿命仅次于芒松，该树种可在内华达山的荒漠山区找到，已知有些树的龄达4900多岁。

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。