The phrase "a weak background" is correct and usable in written English.
It can be used to describe someone’s lack of experience, knowledge, or skills in a particular area.
Example: "Her weak background in mathematics made it challenging for her to excel in the engineering program."
Alternatives: "a limited background" or "a poor background".
"I was called a right-winger, but I said we are letting children down who have a weak background".
In summer, the synoptic circulation is stable, providing a weak background wind velocity (Persian trough), hence, the dominant diurnal wind pattern is induced by the Mediterranean Sea Breeze (mesoscale circulation).
The emission spectrum of Tb(OH 3@SiO2 nanospheres shows the characteristic emission peaks of Tb3+ and a weak background band of SiO2.
Mr Romney's critics have accused him of having a weak background in foreign policy, the same claim made about Mr Obama, who was a first-term senator during his 2008 White House campaign when he made a high-profile trip to the Middle East and Europe.
To eliminate false positives, an anti-HA-tag antibody that does not recognize any mammalian proteins was used in conjunction with anti-AKT1, and only a weak background signal was detected (Fig. S3).
Control animals treated with PBS that were stained equally showed a weak background staining for both treatment groups (Fig. 2 L and N), but the staining for 22C4 scFv was much stronger as compared to the negative control.
The Tories have a weaker background in that area, so perhaps they're holding back their money for a late push into message-based advertising towards the end of the campaign.
Even if males and females took the same number of science classes in high school, females could still have a weaker background in biology if they did not receive the same opportunities to participate in STEM courses in K 12 that males did.
(The White House will continue to support a weaker background-check bill sponsored by Senator John Cornyn, a Republican, and Senator Chris Murphy, a Democrat).
As it is seen from Fig. 3a, the behavior of the SiO2 C sample annealed at 800 °C is essentially different from that for other samples the PL appeared just as a very weak background and the D and G features typical of carbon were observed.
The images clearly show the fluorescence outline around the embryos and a very weak background signal.
