"on previous assignments" is an acceptable phrase to use in written English.
You could use it to indicate that something has happened before in relation to an assignment or project. For example, "I learned a lot of valuable lessons on previous assignments that I can apply to this one."
A fine practitioner at this playhouse on previous assignments, Mr. Dunster works overtime to give the three hours of "Doctor Faustus" some momentum, though I'm not sure whether the actor Pearce Quigley appearing to urinate against one of the theater pillars represents a solution so much as a cop-out.
Up on the mountain I was receiving the sort of Internet fan mail I had never gotten on previous assignments.
The predominant calcite showed strong bands at 1,423 cm−1 for doubly degenerate asymmetric stretching, 875 cm−1 for out-of-plane bending, and 711 cm−1 for doubly degenerate planar bending based on previous assignments [[18]].
Similar to apo-S100B, the changes in chemical shift for Ca2+-S100B Ca2+-S100Bn the fappearedast-inthemediate exchange regime allowing assignment ofast2+-S100B bornd to IC3-C58 to be completed based on previous assignments.
Both iterative algorithms identify instantaneous bottlenecks of multihop flows based on previous assignment, routing, and topology information.
On the basis of previous assignments derived from measurements of the WT and M109A derivatives, an H-site single-site variant is predicted to bind no CO at neutral pH but forms a CO complex at low pH where the S donor atom from M109 enters the coordination sphere.
Several characteristic bands were observed in the FTIR spectrum of NVNC (vide Table 5 and Figure 6), and each of the bands can be assigned to specific functional group based on the previous assignments made in literature.
The younger one, bought in sunny California on a previous assignment, is now a mere 24 years old, and came, naturally enough, with factory-fitted air conditioning.
A Bowie fan, who needed his Life On Mars suit let out two inches on a previous assignment, Moss squeezed into the figure-hugging Ziggy leotard.
His eight-year run at that network ended in acrimony, as have many of Mr. Olbermann's previous assignments on television.
In 1997, on a previous assignment in the park, she brought the Public's 10-year Shakespeare marathon to a close with "Henry VIII," which, along with "King John," is probably the most seldom staged of the history plays.
