极有用的
2.This reusable-object aspect of ActiveX makes it a very useful tool for writing ordinary client/server programs.
3.SH-SY5Y cells are an adrenergic clone of the human neuroblastoma cell line SK-N-SH and a very useful model for the study of neuronal cell terminal differentiation.
4.He had too much worldly wisdom not to perceive that whoever wishes to sell a precious jewel does not bring the treasure to market most profitably by burying it in a sack of wheat, however useful the grains of wheat may be, but better by exposing it at the forefront.
7.But ERP signal is often heavily contaminated by sophisticated background noise such as spontaneous Electroencephalogram(EEG), Electrooculogram(EOG), Electromyogram(EMG), Electrocardiogram(ECG) etc. , and is very weak compared with the background noise in which it is embedded. For this reason, it is necessary to extract ERP signal from the strong background noise.
8.We must confess that for many years, we were not able to see the hidden meaning of the poem. Two years ago, we were rather intrigued by the line “茂林斧过尽为薪” (line 14) . Literally, it means: Lush forests, swept by the axe, completely transformed into firewood. We thought this was a very clever pun because firstly it means that a person without education is transformed through learning into someone useful, as befitting a university. Secondly, Nantah stood on land that was once covered by a rubber estate which had now been cleared to build the university.
9.The cathode ray tube had just been fitted with a hot cathode,which permitted operation at 300 volts instead of the previously required 10,000,the lower voltage obtainable from a stack of dry cells of less than ceiling height.
