The phrase "are typically approximately" is correct and usable in written English.
It can be used when discussing estimates or generalizations about quantities, sizes, or other measurable attributes.
Example: "The results of the experiment are typically approximately 75% accurate, indicating a high level of reliability."
Alternatives: "are usually around" or "are generally about".
The granules are typically approximately 5 nm in size.
These nanoparticles, hereafter referred to as primary particles, are uniform and are typically approximately 5 nm in size.
Response rates to on-line requests are typically approximately 1%; for the 300+ emails we sent, over 60 persons enrolled.
The mitochondrial genomes of members of the superclass Hexapoda (generally referred to as the 'insects') are typically approximately 15 kilobases (kb) in length and encode 37 genes, including 13 protein coding genes (PCGs), 2 ribosomal RNA genes (rRNAs), and 22 transfer RNA genes (tRNAs).
We believe that the accuracy of the estimated numbers of events and censorships increases with the total number of events: for the scenario in Figure 3a, there are typically approximately 265 events, and for the scenario in Figure 3b, typically 45 events.
The thickness of the deposited layers was typically approximately 250 μm.
These vertically grown ZnO nanorods are homogeneously dispersed across the substrate surface and their average length dependent on the growth time is typically approximately 2.2 to 2.5 μm.
Since the spatial scale is typically approximately 1 km when mapped to the ionosphere, the inertial Alfvén waves (IAWs) are one of the most important theoretical bases to understand the diverse microstructures of rapidly varying aurora.
However, given that the typical acquisition costs are only marginally above standard transducer systems (approximately 15 Euros for a 72-hour system) and given that blood in Europe is typically approximately 150 Euros per unit, at worst their introduction is likely to be cost neutral.
For a micro test tube, the cross-section (i.e., the pore size) as well as the distance of separation between two adjacent test tubes (i.e., inter-pore distance) is typically approximately 1 μm, whereas, for a microbeaker the pore size exceeds 1.5 μm and the inter-pore distance could be less than 100 nm.
