It is very important to further investigate the close packing theory to develop cement additives for drillings in deep water and low permeability blocks.

紧密堆积理论的进一步研究对开发适用于深水开发、低压低渗区块开发的固井水泥添加剂具有重要意义。

youdao

The probes used in these test devices are very fragile, difficult to apply because of the small size of the circuit and their close packing, and may not make good contact with the circuit.

由于电路体积小，布线密集，而测试设备中使用的探针容易损坏，用起来很麻烦，就可能与电路接触不好。

youdao

The probes used in these test devices are very fragile, difficult to apply because of the small size of the circuit and their close packing, and may not make good contact with the circuit.

由于电路体积小，布线密集，而测试设备中使用的探针容易损坏，用起来很麻烦，就可能与电路接触不好。

youdao