The phrase "a critical bottleneck" is correct and usable in written English.
It can be used to describe a point in a process that significantly slows down or hinders progress.
Example: "The outdated software has become a critical bottleneck in our production line, causing delays in delivery."
Alternatives: "a major obstacle" or "a significant hindrance".
Multi-drug resistance poses a critical bottleneck in chemotherapy.
Over the last decade electrical batteries have emerged as a critical bottleneck for portable electronics development.
Accordingly, the management team identified capital budgeting as a critical bottleneck keeping the company from achieving its objectives.
The low energy density of graphene-based supercapacitors has been a critical bottleneck for their commercialization.
When applied to a critical bottleneck, carefully crafted, and used in a mindful manner, simple rules can guide the activities that matter.
We develop this concept in the context of memory bandwidth, which is a critical bottleneck in many systems.
Finally, the random motion of the mobile vesicles will always ensure the relatively rapid refilling of the active zone sites that remain empty after vesicle fusion (indeed, clearing these sites of fused vesicles may be a more critical bottleneck in SV recycling than refilling them; Neher, 2010).
This work provides a promising strategy for addressing the critical bottleneck with the existing flame retardants that only enhance flame retardancy at the expense of mechanical properties of polymeric materials.
Hypothesis: financial constraint is the most critical bottleneck to start up a new business in the selected sites.
Hence, one of the hypotheses was set as follows: Hypothesis: financial constraint is the most critical bottleneck to start up a new business in the selected sites This study, which is made on the youth, has confirmed that capital (financing) takes the lion's share of the major critical problems which threatens youth not be successful in establishing own business firms.
As a springboard for conclusion, the following hypotheses were set: the level of female youth unemployment exceeds male youth unemployment, financial constraint is the most critical bottleneck to start up a new business in the selected sites, the youth is suffering from unfair competition and corruptive employment actions, and youth in the area lack training related to starting their own venture.
