放射虫类

Important advance are made in the date of slices and superslices:(1) Abundant acritarch and a few radiolarian fossils are collected in the "barren strata" formed by epi-middle metamorphic slices at Gouli, Longshigenggongwu, thus provide data evidence for this set of strata. A series of isotopic dating data (14) showed that the date are between 1 000 Ma and 500 Ma, close to that of the fossils.

在岩片和超岩片时态调查方面取得如下重要进展：(1)在沟里、龙什更公坞等地区的由中浅变质岩岩片构成的"哑地层"中获取较丰富的疑源类和少量放射虫化石，使该套地层从化石方面首次获得了确切的时代证据，并新获一大批同位素年龄数据（14个），年龄值主要分布在1000—500Ma之间，化石时代与同位素测年吻合较好。

Persculptus to Parakidograptus acuminatus Zones, could be recognized during the interval. In addition, the abundance changes of the radiolaria at the Goujiaya and Datangkou sections were coincided with the sea-level changes, and correlatable with the synchorous 5 fluctuations of the sea-level in North America and Africa. So above-mentioned 5 cycles could represent the eustasies during the latest Ordovician to the earliest Silurian.

在这2个剖面上，放射虫丰度变化也表现出相似的规律，与笔石和腕足类的形态、分异度和丰度变化所反应的海平面升降大体一致，和北美、非洲同期海平面的5次波动可以对比，据此指出，以上5次海平面旋回代表了晚奥陶世晚期至志留纪初期全球性海平面变化。

Persculptus to Parakidograptus acuminatus Zones, could be recognized during theinterval. In addition, the abundance changes of the radiolaria at the Goujiaya and Datangkou sections werecoincided with the sea-level changes, and correlatable with the synchorous 5 fluctuations of the sea-level inNorth America and Africa. So above-mentioned 5 cycles could represent the eustasies during the latestOrdovician to the earliest Silurian.

在这2个剖面上，放射虫丰度变化也表现出相似的规律，与笔石和腕足类的形态、分异度和丰度变化所反应的海平面升降大体一致，和北美、非洲同期海平面的5次波动可以对比，据此指出，以上5次海平面旋回代表了晚奥陶世晚期至志留纪初期全球性海平面变化。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。