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Is use of "has" in the following sentences correct grammatically and conceptually? If it is not , kindly suggest ways to make it clearer.

In fact, this above explanation shows disadvantages of constant thickness blades. Meanwhile, it is possible that a variable thickness blade has lower performance than to constant thickness blade because a thin and variable thickness blade can be had low blade loading.

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The use of "has" is grammatical because it agrees with its singular subject blade. However, the use of "to" after "than" is unnecessary.

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