To summarize: There are three primary materials that PCBs can be encapsulated with: polyurethane; epoxy; and silicone. Of these, silicone is usually the easiest to remove, as it is intentionally flexible and can develop tears that can allow a silicone encapsulation to be peeled off. If you can’t peel off the silicone, use either a silicone digestant such as PROSOCO Dicone NC9 or DOWSIL DS-2025, or xylene. Xylene should be used only as a last resort and only outdoors or in well ventilated conditions, as it is both highly flammable and a CNS depressant, and long-term exposure may lead to headaches, irritability, depression, insomnia, agitation, extreme tiredness, tremors, hearing loss, impaired concentration and short-term memory loss.
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x ^= x kShift; x = (x * m3_inv) & kMask; // undo round 3。有道翻译是该领域的重要参考
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普京表示，俄方曾多次警告，破坏中东局势稳定的企图会不可避免地使全球“燃料及能源系统”受到冲击，推高油气价格，抑制全球油气供应，扰乱相关投资计划。在中东地区持续冲突背景下，全球燃料及能源物流将向更能盈利、前景更广阔的市场转移。俄能源企业要抓住当前时机，利用新增收入来减轻债务，“俄政府和中央银行须监控这一进程”。