"could be remained" is correct and usable in written English.
Generally speaking, this phrase is used to express possibility. For example, "The population of the city could be remained steady even with new housing developments being built."
About 87% of its original specific capacitance could be remained after 1000 cycles.
Both origin carbon and nitrogen doped carbon show excellent cycling stability that 95% of the capacitance could be remained after 5000 charge-discharge cycles.
Even after 150 cycles at a current density of 200 mA g−1, the specific capacity still could be remained at 420 mAh g−1.
The lactate production rate could be remained almost constant at the expected level (0.04 μmol min−1 ml−1) for the initial 5 h (Figure 4).
This could be remained for future experiment for them to be compared with other negative contrast agents such as iron oxide-based ones.
It was found that such design is effective on the increase of fracture energy both at room temperature and at high temperature, and the strength at high temperature could be remained in a relatively high revel.
Time has taken its toll on Hull, but the bones of what it was and could be remain.
Even if Mr. Clinton steps down, there could be remaining complications about a potential president's name being affixed to an international foundation.
"If you bleach them for too long, you could kill the spores, but if you don't treat them for long enough, there could be remaining bacteria that will grow in culture and kill them".
patens to identify any CNSs that could still be remaining as common to all land plants.
The worst thing we could do is remain silent.
