（1）主题界定更聚焦：仅包括油气开采、油气设备、炼制加工、运输及销售环节，高度集中于具备优质储量、低成本优势和稳定分红能力的油气巨头。
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What happens when you merge the elements of these arrays against each-other?
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An accompanying desktop app allows users to draw in whatever they want on the control surface—faders for control change messages, grids of sample triggers that send notes to external gear, keyboard rolls that only show notes in a selected scale, a multitrack sequencer, and even an experimental “API Zone” that’s open to endless tinkering for the tech-minded music nerd. V2 also adds dedicated buttons with a touchscreen for more intuitive adjustments without a computer connection, a built-in MIDI looper for flexible solo jam sessions, and an upgraded silicon surface that’s a bit more sensitive and sympathetic to pressure-based gestures that can also be mapped to any CC value you’d like.